├── Module-3_Core_Java
    ├── Reflection.java
    ├── HelloWorld.java
    ├── ClassFileDecompile.java
    ├── JavapBytecode.java
    ├── VirtualThreadsDemo.java
    ├── OperatorPrecedence.java
    ├── LambdaSort.java
    ├── EvenOddChecker.java
    ├── ThreadCreation.java
    ├── MultiplicationTable.java
    ├── LeapYearChecker.java
    ├── TypeCastingExample.java
    ├── FactorialCalculator.java
    ├── InheritanceExample.java
    ├── StreamEvenFilter.java
    ├── DataTypeDemo.java
    ├── RecursiveFibonacci.java
    ├── CarClass.java
    ├── PersonRecord.java
    ├── MethodOverloading.java
    ├── PatternSwitch.java
    ├── InterfaceImplementation.java
    ├── TryCatchExample.java
    ├── JavaModules.java
    ├── HttpClientExample.java
    ├── FileReading.java
    ├── CustomExceptionDemo.java
    ├── ReflectionDemo.java
    ├── JDBCConnection.java
    ├── ArraySumAverage.java
    ├── Serverclient
    │   ├── TCPClient.java
    │   └── TCPServer.java
    ├── ArrayListExample.java
    ├── GradeCalculator.java
    ├── ExecutorServiceCallable.java
    ├── FileWriting.java
    ├── PalindromeChecker.java
    ├── NumberGuessingGame.java
    ├── StringReversal.java
    ├── JDBCTransaction.java
    ├── HashMapExample.java
    ├── JDBCInsertUpdate.java
    └── SimpleCalculator.java
├── Module-1__HTML5
    ├── images
    │   └── Bug.png
    ├── README.md
    ├── index.html
    └── Steps-with-code.txt
├── .gitignore
├── LICENSE
└── Module-2_ANSI SQL
    └── Implementation.txt


/Module-3_Core_Java/Reflection.java:
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1 |  
2 | 


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/Module-1__HTML5/images/Bug.png:
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https://raw.githubusercontent.com/Naveenk069/CTS-DN4.0-Upskilling-Handbook-Java-FSE/main/Module-1__HTML5/images/Bug.png


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/Module-3_Core_Java/HelloWorld.java:
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1 | public class HelloWorld {
2 |     public static void main(String[] args) {
3 |         System.out.println("Hello, World!");
4 |     }
5 | }
6 | 


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/Module-3_Core_Java/ClassFileDecompile.java:
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1 | public class ClassFileDecompile {
2 |     public static void main(String[] args) {
3 |         System.out.println("Compile this and view with JD-GUI or CFR to decompile.");
4 |     }
5 | }
6 | 
7 | 
8 |  // Compile this and open .class file in JD-GUI
9 | 


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/Module-3_Core_Java/JavapBytecode.java:
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1 |  
2 | public class JavapBytecode {
3 |     public static void main(String[] args) {
4 |         System.out.println("Inspect this class using javap -c JavapBytecode");
5 |     }
6 | }
7 | 
8 |  // After compiling: javac JavapBytecode.java
9 |  // Use: javap -c JavapBytecode


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/Module-3_Core_Java/VirtualThreadsDemo.java:
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 1 | public class VirtualThreadsDemo {
 2 |     public static void main(String[] args) {
 3 |         for (int i = 0; i < 100000; i++) {
 4 |             Thread.startVirtualThread(() -> {
 5 |                 System.out.println("Running virtual thread " + Thread.currentThread());
 6 |             });
 7 |         }
 8 |     }
 9 | }
10 |  
11 | 


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/Module-3_Core_Java/OperatorPrecedence.java:
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 1 | public class OperatorPrecedence {
 2 |     public static void main(String[] args) {
 3 |         int result = 10 + 5 * 2;
 4 |         int result2 = (10 + 5) * 2;
 5 | 
 6 |         System.out.println("Without parentheses: 10 + 5 * 2 = " + result);
 7 |         System.out.println("With parentheses: (10 + 5) * 2 = " + result2);
 8 |     }
 9 | }
10 |  
11 | 


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/.gitignore:
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 1 | # Compiled class file
 2 | *.class
 3 | 
 4 | # Log file
 5 | *.log
 6 | 
 7 | # BlueJ files
 8 | *.ctxt
 9 | 
10 | # Mobile Tools for Java (J2ME)
11 | .mtj.tmp/
12 | 
13 | # Package Files #
14 | *.jar
15 | *.war
16 | *.nar
17 | *.ear
18 | *.zip
19 | *.tar.gz
20 | *.rar
21 | 
22 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
23 | hs_err_pid*
24 | replay_pid*
25 | 


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/Module-3_Core_Java/LambdaSort.java:
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 1 | import java.util.*;
 2 | 
 3 | public class LambdaSort {
 4 |     public static void main(String[] args) {
 5 |         List<String> names = Arrays.asList("Zara", "Mike", "Bob", "Alice");
 6 | 
 7 |         names.sort((a, b) -> a.compareToIgnoreCase(b));
 8 | 
 9 |         System.out.println("Sorted names:");
10 |         names.forEach(System.out::println);
11 |     }
12 | }
13 |  
14 | 


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/Module-3_Core_Java/EvenOddChecker.java:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class EvenOddChecker {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter a number: ");
 7 |         int num = sc.nextInt();
 8 | 
 9 |         if (num % 2 == 0)
10 |             System.out.println(num + " is Even");
11 |         else
12 |             System.out.println(num + " is Odd");
13 |     }
14 | }
15 | 


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/Module-3_Core_Java/ThreadCreation.java:
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 1 | class MyThread extends Thread {
 2 |     public void run() {
 3 |         for (int i = 0; i < 5; i++) {
 4 |             System.out.println("Running in thread: " + getName());
 5 |         }
 6 |     }
 7 | }
 8 | 
 9 | public class ThreadCreation {
10 |     public static void main(String[] args) {
11 |         MyThread t1 = new MyThread();
12 |         MyThread t2 = new MyThread();
13 | 
14 |         t1.start();
15 |         t2.start();
16 |     }
17 | }
18 |  
19 | 


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/Module-3_Core_Java/MultiplicationTable.java:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class MultiplicationTable {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter a number: ");
 7 |         int num = sc.nextInt();
 8 | 
 9 |         System.out.println("Multiplication Table for " + num);
10 |         for (int i = 1; i <= 10; i++) {
11 |             System.out.println(num + " x " + i + " = " + (num * i));
12 |         }
13 |     }
14 | }
15 | 


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/Module-3_Core_Java/LeapYearChecker.java:
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 1 |  import java.util.Scanner;
 2 | 
 3 | public class LeapYearChecker {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter a year: ");
 7 |         int year = sc.nextInt();
 8 | 
 9 |         if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
10 |             System.out.println(year + " is a Leap Year");
11 |         else
12 |             System.out.println(year + " is Not a Leap Year");
13 |     }
14 | }
15 | 


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/Module-3_Core_Java/TypeCastingExample.java:
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 1 |  public class TypeCastingExample {
 2 |     public static void main(String[] args) {
 3 |         double d = 9.78;
 4 |         int i = (int) d;  // Explicit casting
 5 | 
 6 |         int x = 100;
 7 |         double y = x;     // Implicit casting
 8 | 
 9 |         System.out.println("Double value: " + d);
10 |         System.out.println("After casting to int: " + i);
11 |         System.out.println("Int value: " + x);
12 |         System.out.println("After casting to double: " + y);
13 |     }
14 | }
15 | 


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/Module-3_Core_Java/FactorialCalculator.java:
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 1 |  
 2 | import java.util.Scanner;
 3 | 
 4 | public class FactorialCalculator {
 5 |     public static void main(String[] args) {
 6 |         Scanner sc = new Scanner(System.in);
 7 |         System.out.print("Enter a non-negative integer: ");
 8 |         int num = sc.nextInt();
 9 |         long factorial = 1;
10 | 
11 |         for (int i = 1; i <= num; i++) {
12 |             factorial *= i;
13 |         }
14 | 
15 |         System.out.println("Factorial of " + num + " = " + factorial);
16 |     }
17 | }
18 | 


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/Module-3_Core_Java/InheritanceExample.java:
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 1 | class Animal {
 2 |     void makeSound() {
 3 |         System.out.println("Some generic animal sound");
 4 |     }
 5 | }
 6 | 
 7 | class Dog extends Animal {
 8 |     @Override
 9 |     void makeSound() {
10 |         System.out.println("Bark");
11 |     }
12 | }
13 | 
14 | public class InheritanceExample {
15 |     public static void main(String[] args) {
16 |         Animal generic = new Animal();
17 |         Dog dog = new Dog();
18 | 
19 |         generic.makeSound();
20 |         dog.makeSound();
21 |     }
22 | }
23 |  
24 | 


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/Module-3_Core_Java/StreamEvenFilter.java:
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 1 | import java.util.*;
 2 | import java.util.stream.Collectors;
 3 | 
 4 | public class StreamEvenFilter {
 5 |     public static void main(String[] args) {
 6 |         List<Integer> numbers = Arrays.asList(10, 15, 20, 25, 30);
 7 | 
 8 |         List<Integer> evenNumbers = numbers.stream()
 9 |                                            .filter(n -> n % 2 == 0)
10 |                                            .collect(Collectors.toList());
11 | 
12 |         System.out.println("Even numbers: " + evenNumbers);
13 |     }
14 | }
15 |  
16 | 


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/Module-3_Core_Java/DataTypeDemo.java:
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 1 | public class DataTypeDemo {
 2 |     public static void main(String[] args) {
 3 |         int intVar = 100;
 4 |         float floatVar = 10.5f;
 5 |         double doubleVar = 123.456;
 6 |         char charVar = 'A';
 7 |         boolean boolVar = true;
 8 | 
 9 |         System.out.println("Integer: " + intVar);
10 |         System.out.println("Float: " + floatVar);
11 |         System.out.println("Double: " + doubleVar);
12 |         System.out.println("Character: " + charVar);
13 |         System.out.println("Boolean: " + boolVar);
14 |     }
15 | }
16 |  
17 | 


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/Module-3_Core_Java/RecursiveFibonacci.java:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class RecursiveFibonacci {
 4 |     public static int fibonacci(int n) {
 5 |         if (n <= 1)
 6 |             return n;
 7 |         return fibonacci(n - 1) + fibonacci(n - 2);
 8 |     }
 9 | 
10 |     public static void main(String[] args) {
11 |         Scanner sc = new Scanner(System.in);
12 |         System.out.print("Enter the position (n): ");
13 |         int n = sc.nextInt();
14 | 
15 |         System.out.println("Fibonacci number at position " + n + " is: " + fibonacci(n));
16 |     }
17 | }
18 |  
19 | 


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/Module-3_Core_Java/CarClass.java:
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 1 | class Car {
 2 |     String make;
 3 |     String model;
 4 |     int year;
 5 | 
 6 |     void displayDetails() {
 7 |         System.out.println("Make: " + make);
 8 |         System.out.println("Model: " + model);
 9 |         System.out.println("Year: " + year);
10 |     }
11 | }
12 | 
13 | public class CarClass {
14 |     public static void main(String[] args) {
15 |         Car myCar = new Car();
16 |         myCar.make = "Toyota";
17 |         myCar.model = "Corolla";
18 |         myCar.year = 2020;
19 | 
20 |         myCar.displayDetails();
21 |     }
22 | }
23 |  
24 | 


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/Module-3_Core_Java/PersonRecord.java:
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 1 | import java.util.*;
 2 | import java.util.stream.Collectors;
 3 | 
 4 | record Person(String name, int age) {}
 5 | 
 6 | public class PersonRecord {
 7 |     public static void main(String[] args) {
 8 |         List<Person> people = List.of(
 9 |             new Person("Alice", 22),
10 |             new Person("Bob", 30),
11 |             new Person("Charlie", 18)
12 |         );
13 | 
14 |         System.out.println("People over 20:");
15 |         people.stream()
16 |               .filter(p -> p.age() > 20)
17 |               .forEach(System.out::println);
18 |     }
19 | }
20 |  
21 | 


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/Module-3_Core_Java/MethodOverloading.java:
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 1 | public class MethodOverloading {
 2 |     public static int add(int a, int b) {
 3 |         return a + b;
 4 |     }
 5 | 
 6 |     public static double add(double a, double b) {
 7 |         return a + b;
 8 |     }
 9 | 
10 |     public static int add(int a, int b, int c) {
11 |         return a + b + c;
12 |     }
13 | 
14 |     public static void main(String[] args) {
15 |         System.out.println("Sum of 2 ints: " + add(5, 3));
16 |         System.out.println("Sum of 2 doubles: " + add(4.5, 6.3));
17 |         System.out.println("Sum of 3 ints: " + add(1, 2, 3));
18 |     }
19 | }
20 | 


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/Module-3_Core_Java/PatternSwitch.java:
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 1 |  
 2 | public class PatternSwitch {
 3 |     public static void printType(Object obj) {
 4 |         switch (obj) {
 5 |             case Integer i -> System.out.println("Integer: " + i);
 6 |             case String s -> System.out.println("String: " + s);
 7 |             case Double d -> System.out.println("Double: " + d);
 8 |             default -> System.out.println("Unknown type");
 9 |         }
10 |     }
11 | 
12 |     public static void main(String[] args) {
13 |         printType(42);
14 |         printType("Hello");
15 |         printType(3.14);
16 |         printType(true);
17 |     }
18 | }
19 | 


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/Module-3_Core_Java/InterfaceImplementation.java:
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 1 | interface Playable {
 2 |     void play();
 3 | }
 4 | 
 5 | class Guitar implements Playable {
 6 |     public void play() {
 7 |         System.out.println("Guitar is playing...");
 8 |     }
 9 | }
10 | 
11 | class Piano implements Playable {
12 |     public void play() {
13 |         System.out.println("Piano is playing...");
14 |     }
15 | }
16 | 
17 | public class InterfaceImplementation {
18 |     public static void main(String[] args) {
19 |         Playable g = new Guitar();
20 |         Playable p = new Piano();
21 | 
22 |         g.play();
23 |         p.play();
24 |     }
25 | }
26 |  
27 | 


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/Module-3_Core_Java/TryCatchExample.java:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class TryCatchExample {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter first integer: ");
 7 |         int a = sc.nextInt();
 8 |         System.out.print("Enter second integer: ");
 9 |         int b = sc.nextInt();
10 | 
11 |         try {
12 |             int result = a / b;
13 |             System.out.println("Result = " + result);
14 |         } catch (ArithmeticException e) {
15 |             System.out.println("Error: Cannot divide by zero.");
16 |         }
17 |     }
18 | }
19 |  
20 | 


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/Module-3_Core_Java/JavaModules.java:
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 1 | // module-info.java in com.utils
 2 | module com.utils {
 3 |     exports com.utils;
 4 | }
 5 | 
 6 | // Utility.java in com.utils
 7 | package com.utils;
 8 | public class Utility {
 9 |     public static void greet() {
10 |         System.out.println("Hello from Utility Module!");
11 |     }
12 | }
13 | 
14 | // module-info.java in com.greetings
15 | module com.greetings {
16 |     requires com.utils;
17 | }
18 | 
19 | // Main.java in com.greetings
20 | package com.greetings;
21 | import com.utils.Utility;
22 | 
23 | public class Main {
24 |     public static void main(String[] args) {
25 |         Utility.greet();
26 |     }
27 | }
28 |  
29 | 


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/Module-3_Core_Java/HttpClientExample.java:
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 1 | import java.net.http.*;
 2 | import java.net.URI;
 3 | 
 4 | public class HttpClientExample {
 5 |     public static void main(String[] args) throws Exception {
 6 |         HttpClient client = HttpClient.newHttpClient();
 7 |         HttpRequest request = HttpRequest.newBuilder()
 8 |                 .uri(URI.create("https://api.github.com"))
 9 |                 .build();
10 | 
11 |         HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
12 | 
13 |         System.out.println("Status: " + response.statusCode());
14 |         System.out.println("Response: " + response.body());
15 |     }
16 | }
17 |  
18 | 


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/Module-3_Core_Java/FileReading.java:
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 1 | import java.io.File;
 2 | import java.io.FileNotFoundException;
 3 | import java.util.Scanner;
 4 | 
 5 | public class FileReading {
 6 |     public static void main(String[] args) {
 7 |         try {
 8 |             File file = new File("output.txt");
 9 |             Scanner reader = new Scanner(file);
10 | 
11 |             while (reader.hasNextLine()) {
12 |                 String line = reader.nextLine();
13 |                 System.out.println(line);
14 |             }
15 | 
16 |             reader.close();
17 |         } catch (FileNotFoundException e) {
18 |             System.out.println("File not found.");
19 |         }
20 |     }
21 | }
22 |  
23 | 


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/Module-3_Core_Java/CustomExceptionDemo.java:
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 1 | class InvalidAgeException extends Exception {
 2 |     public InvalidAgeException(String message) {
 3 |         super(message);
 4 |     }
 5 | }
 6 | 
 7 | public class CustomExceptionDemo {
 8 |     public static void main(String[] args) {
 9 |         int age = 16;
10 | 
11 |         try {
12 |             if (age < 18) {
13 |                 throw new InvalidAgeException("Age must be 18 or older.");
14 |             } else {
15 |                 System.out.println("Access granted.");
16 |             }
17 |         } catch (InvalidAgeException e) {
18 |             System.out.println("Exception: " + e.getMessage());
19 |         }
20 |     }
21 | }
22 | 


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/Module-3_Core_Java/ReflectionDemo.java:
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 1 | import java.lang.reflect.*;
 2 | 
 3 | class Sample {
 4 |     public void show() {
 5 |         System.out.println("Hello from Sample");
 6 |     }
 7 | }
 8 | 
 9 | public class ReflectionDemo {
10 |     public static void main(String[] args) throws Exception {
11 |         Class<?> cls = Class.forName("Sample");
12 |         Method[] methods = cls.getDeclaredMethods();
13 | 
14 |         for (Method m : methods) {
15 |             System.out.println("Method: " + m.getName());
16 |         }
17 | 
18 |         Object obj = cls.getDeclaredConstructor().newInstance();
19 |         Method method = cls.getMethod("show");
20 |         method.invoke(obj);
21 |     }
22 | }
23 |  
24 | 


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/Module-3_Core_Java/JDBCConnection.java:
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 1 | import java.sql.*;
 2 | 
 3 | public class JDBCConnection {
 4 |     public static void main(String[] args) {
 5 |         String url = "jdbc:sqlite:students.db"; // Or your MySQL JDBC URL
 6 |         try (Connection conn = DriverManager.getConnection(url)) {
 7 |             Statement stmt = conn.createStatement();
 8 |             ResultSet rs = stmt.executeQuery("SELECT * FROM students");
 9 | 
10 |             while (rs.next()) {
11 |                 System.out.println(rs.getInt("id") + " - " + rs.getString("name"));
12 |             }
13 |         } catch (SQLException e) {
14 |             System.out.println("Connection failed: " + e.getMessage());
15 |         }
16 |     }
17 | }
18 |  
19 | 


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/Module-3_Core_Java/ArraySumAverage.java:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class ArraySumAverage {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter number of elements: ");
 7 |         int n = sc.nextInt();
 8 |         int[] arr = new int[n];
 9 |         int sum = 0;
10 | 
11 |         System.out.println("Enter " + n + " numbers:");
12 |         for (int i = 0; i < n; i++) {
13 |             arr[i] = sc.nextInt();
14 |             sum += arr[i];
15 |         }
16 | 
17 |         double average = (double) sum / n;
18 |         System.out.println("Sum: " + sum);
19 |         System.out.println("Average: " + average);
20 |     }
21 | }
22 |  
23 | 


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/Module-3_Core_Java/Serverclient/TCPClient.java:
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 1 | // Client.java
 2 | import java.net.*;
 3 | import java.io.*;
 4 | 
 5 | public class TCPChatClient {
 6 |     public static void main(String[] args) throws IOException {
 7 |         Socket socket = new Socket("localhost", 1234);
 8 |         BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
 9 |         PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
10 | 
11 |         System.out.println("Connected to server. Start typing:");
12 |         String message;
13 |         while (!(message = input.readLine()).equalsIgnoreCase("exit")) {
14 |             out.println(message);
15 |         }
16 | 
17 |         socket.close();
18 |     }
19 | }
20 | 
21 | 


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/Module-3_Core_Java/ArrayListExample.java:
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 1 | import java.util.ArrayList;
 2 | import java.util.Scanner;
 3 | 
 4 | public class ArrayListExample {
 5 |     public static void main(String[] args) {
 6 |         ArrayList<String> names = new ArrayList<>();
 7 |         Scanner sc = new Scanner(System.in);
 8 | 
 9 |         System.out.println("Enter student names (type 'stop' to finish):");
10 |         while (true) {
11 |             String name = sc.nextLine();
12 |             if (name.equalsIgnoreCase("stop")) break;
13 |             names.add(name);
14 |         }
15 | 
16 |         System.out.println("Student names:");
17 |         for (String name : names) {
18 |             System.out.println(name);
19 |         }
20 |     }
21 | }
22 |  
23 | 


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/Module-3_Core_Java/GradeCalculator.java:
--------------------------------------------------------------------------------
 1 | import java.util.Scanner;
 2 | 
 3 | public class GradeCalculator {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter marks out of 100: ");
 7 |         int marks = sc.nextInt();
 8 | 
 9 |         if (marks >= 90 && marks <= 100)
10 |             System.out.println("Grade: A");
11 |         else if (marks >= 80)
12 |             System.out.println("Grade: B");
13 |         else if (marks >= 70)
14 |             System.out.println("Grade: C");
15 |         else if (marks >= 60)
16 |             System.out.println("Grade: D");
17 |         else
18 |             System.out.println("Grade: F");
19 |     }
20 | }
21 |  
22 | 


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/Module-3_Core_Java/ExecutorServiceCallable.java:
--------------------------------------------------------------------------------
 1 | import java.util.concurrent.*;
 2 | import java.util.*;
 3 | 
 4 | public class ExecutorServiceCallable {
 5 |     public static void main(String[] args) throws Exception {
 6 |         ExecutorService executor = Executors.newFixedThreadPool(3);
 7 |         List<Callable<String>> tasks = Arrays.asList(
 8 |             () -> "Task 1 result",
 9 |             () -> "Task 2 result",
10 |             () -> "Task 3 result"
11 |         );
12 | 
13 |         List<Future<String>> results = executor.invokeAll(tasks);
14 | 
15 |         for (Future<String> result : results) {
16 |             System.out.println(result.get());
17 |         }
18 | 
19 |         executor.shutdown();
20 |     }
21 | }
22 |  
23 | 


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/Module-3_Core_Java/FileWriting.java:
--------------------------------------------------------------------------------
 1 | import java.io.FileWriter;
 2 | import java.io.IOException;
 3 | import java.util.Scanner;
 4 | 
 5 | public class FileWriting {
 6 |     public static void main(String[] args) {
 7 |         Scanner sc = new Scanner(System.in);
 8 |         System.out.print("Enter a string to write to file: ");
 9 |         String data = sc.nextLine();
10 | 
11 |         try {
12 |             FileWriter writer = new FileWriter("output.txt");
13 |             writer.write(data);
14 |             writer.close();
15 |             System.out.println("Data written to output.txt successfully.");
16 |         } catch (IOException e) {
17 |             System.out.println("An error occurred.");
18 |             e.printStackTrace();
19 |         }
20 |     }
21 | }
22 |  
23 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/Serverclient/TCPServer.java:
--------------------------------------------------------------------------------
 1 | // Server.java
 2 | import java.net.*;
 3 | import java.io.*;
 4 | 
 5 | public class TCPChatServer {
 6 |     public static void main(String[] args) throws IOException {
 7 |         ServerSocket server = new ServerSocket(1234);
 8 |         Socket socket = server.accept();
 9 |         BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
10 |         PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
11 | 
12 |         out.println("Welcome to the chat server!");
13 |         String msg;
14 |         while ((msg = in.readLine()) != null) {
15 |             System.out.println("Client says: " + msg);
16 |         }
17 | 
18 |         socket.close();
19 |         server.close();
20 |     }
21 | }
22 |  
23 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/PalindromeChecker.java:
--------------------------------------------------------------------------------
 1 | import java.util.Scanner;
 2 | 
 3 | public class PalindromeChecker {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter a string: ");
 7 |         String input = sc.nextLine();
 8 | 
 9 |         // Normalize string: remove non-alphanumeric and convert to lowercase
10 |         String normalized = input.replaceAll("[^a-zA-Z0-9]", "").toLowerCase();
11 | 
12 |         // Reverse manually
13 |         String reversed = "";
14 |         for (int i = normalized.length() - 1; i >= 0; i--) {
15 |             reversed += normalized.charAt(i);
16 |         }
17 | 
18 |         if (normalized.equals(reversed)) {
19 |             System.out.println("The string is a palindrome.");
20 |         } else {
21 |             System.out.println("The string is NOT a palindrome.");
22 |         }
23 |     }
24 | }
25 |  
26 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/NumberGuessingGame.java:
--------------------------------------------------------------------------------
 1 | import java.util.Scanner;
 2 | import java.util.Random;
 3 | 
 4 | public class NumberGuessingGame {
 5 |     public static void main(String[] args) {
 6 |         Scanner sc = new Scanner(System.in);
 7 |         Random rand = new Random();
 8 |         int numberToGuess = rand.nextInt(100) + 1;
 9 |         int guess;
10 | 
11 |         System.out.println("Guess a number between 1 and 100");
12 | 
13 |         do {
14 |             System.out.print("Enter your guess: ");
15 |             guess = sc.nextInt();
16 | 
17 |             if (guess > numberToGuess) {
18 |                 System.out.println("Too high!");
19 |             } else if (guess < numberToGuess) {
20 |                 System.out.println("Too low!");
21 |             } else {
22 |                 System.out.println("Correct! You guessed it!");
23 |             }
24 |         } while (guess != numberToGuess);
25 |     }
26 | }
27 |  
28 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/StringReversal.java:
--------------------------------------------------------------------------------
 1 | import java.util.Scanner;
 2 | 
 3 | public class StringReversal {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter a string: ");
 7 |         String input = sc.nextLine();
 8 | 
 9 |         String reversed = "";
10 |         for (int i = input.length() - 1; i >= 0; i--) {
11 |             reversed += input.charAt(i);
12 |         }
13 | 
14 |         System.out.println("Reversed string: " + reversed);
15 |     }
16 | }
17 | 
18 | 
19 | //import java.util.Scanner;
20 | 
21 | //public class StringReversal {
22 |    // public static void main(String[] args) {
23 |     //    Scanner sc = new Scanner(System.in);
24 |     //    System.out.print("Enter a string: ");
25 |     //    String input = sc.nextLine();
26 | 
27 |    //     String reversed = new StringBuilder(input).reverse().toString();
28 |    //     System.out.println("Reversed string: " + reversed);
29 |    // }
30 | // }
31 | 
32 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/JDBCTransaction.java:
--------------------------------------------------------------------------------
 1 | import java.sql.*;
 2 | 
 3 | public class JDBCTransaction {
 4 |     public static void main(String[] args) {
 5 |         String url = "jdbc:sqlite:bank.db";
 6 | 
 7 |         try (Connection conn = DriverManager.getConnection(url)) {
 8 |             conn.setAutoCommit(false);
 9 | 
10 |             Statement stmt = conn.createStatement();
11 |             stmt.executeUpdate("UPDATE accounts SET balance = balance - 100 WHERE id = 1");
12 |             stmt.executeUpdate("UPDATE accounts SET balance = balance + 100 WHERE id = 2");
13 | 
14 |             conn.commit();
15 |             System.out.println("Transaction successful!");
16 |         } catch (SQLException e) {
17 |             System.out.println("Transaction failed. Rolling back...");
18 |             try {
19 |                 if (conn != null) conn.rollback();
20 |             } catch (SQLException ex) {
21 |                 System.out.println("Rollback failed.");
22 |             }
23 |         }
24 |     }
25 | }
26 |  
27 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/HashMapExample.java:
--------------------------------------------------------------------------------
 1 | import java.util.HashMap;
 2 | import java.util.Scanner;
 3 | 
 4 | public class HashMapExample {
 5 |     public static void main(String[] args) {
 6 |         HashMap<Integer, String> students = new HashMap<>();
 7 |         Scanner sc = new Scanner(System.in);
 8 | 
 9 |         System.out.println("Enter 3 student ID-name pairs:");
10 |         for (int i = 0; i < 3; i++) {
11 |             System.out.print("Enter ID: ");
12 |             int id = sc.nextInt();
13 |             sc.nextLine(); // Consume newline
14 |             System.out.print("Enter name: ");
15 |             String name = sc.nextLine();
16 |             students.put(id, name);
17 |         }
18 | 
19 |         System.out.print("Enter an ID to search: ");
20 |         int searchId = sc.nextInt();
21 | 
22 |         if (students.containsKey(searchId)) {
23 |             System.out.println("Name: " + students.get(searchId));
24 |         } else {
25 |             System.out.println("ID not found.");
26 |         }
27 |     }
28 | }
29 |  
30 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/JDBCInsertUpdate.java:
--------------------------------------------------------------------------------
 1 | import java.sql.*;
 2 | 
 3 | public class JDBCInsertUpdate {
 4 |     public static void main(String[] args) {
 5 |         String url = "jdbc:sqlite:students.db";
 6 | 
 7 |         try (Connection conn = DriverManager.getConnection(url)) {
 8 |             // Insert
 9 |             String insertSQL = "INSERT INTO students(id, name) VALUES (?, ?)";
10 |             PreparedStatement psInsert = conn.prepareStatement(insertSQL);
11 |             psInsert.setInt(1, 1);
12 |             psInsert.setString(2, "John Doe");
13 |             psInsert.executeUpdate();
14 | 
15 |             // Update
16 |             String updateSQL = "UPDATE students SET name=? WHERE id=?";
17 |             PreparedStatement psUpdate = conn.prepareStatement(updateSQL);
18 |             psUpdate.setString(1, "Jane Doe");
19 |             psUpdate.setInt(2, 1);
20 |             psUpdate.executeUpdate();
21 | 
22 |             System.out.println("Insert and Update completed.");
23 |         } catch (SQLException e) {
24 |             System.out.println("Error: " + e.getMessage());
25 |         }
26 |     }
27 | }
28 |  
29 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2025 NAVEENKUMAR M
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/Module-3_Core_Java/SimpleCalculator.java:
--------------------------------------------------------------------------------
 1 |  import java.util.Scanner;
 2 | 
 3 | public class SimpleCalculator {
 4 |     public static void main(String[] args) {
 5 |         Scanner sc = new Scanner(System.in);
 6 |         System.out.print("Enter first number: ");
 7 |         double a = sc.nextDouble();
 8 | 
 9 |         System.out.print("Enter second number: ");
10 |         double b = sc.nextDouble();
11 | 
12 |         System.out.print("Enter operation (+, -, *, /): ");
13 |         char op = sc.next().charAt(0);
14 | 
15 |         double result;
16 |         switch (op) {
17 |             case '+': result = a + b; break;
18 |             case '-': result = a - b; break;
19 |             case '*': result = a * b; break;
20 |             case '/': 
21 |                 if (b != 0) result = a / b;
22 |                 else {
23 |                     System.out.println("Error: Division by zero.");
24 |                     return;
25 |                 }
26 |                 break;
27 |             default:
28 |                 System.out.println("Invalid operator");
29 |                 return;
30 |         }
31 |         System.out.println("Result = " + result);
32 |     }
33 | }
34 | 


--------------------------------------------------------------------------------
/Module-1__HTML5/README.md:
--------------------------------------------------------------------------------
 1 | # HTML5 Exercises
 2 | # Project Theme: Local Community Event Portal
 3 | 
 4 | _________________________________________________________________________________
 5 | 
 6 | # 1.  Create the HTML5 Base Template
 7 | 
 8 | ![1](https://github.com/user-attachments/assets/90fe5c22-5d79-4891-911b-5b784d59b03e)
 9 | 
10 | 
11 | _________________________________________________________________________________
12 | 
13 | 
14 | # 2. Navigation and Linking
15 | 
16 | ![2](https://github.com/user-attachments/assets/29f82701-f703-4d83-b7bc-bc9ce2d2081f)
17 | 
18 | 
19 | _________________________________________________________________________________
20 | 
21 | # 3. Welcome Message with Styling and ID/Class
22 | 
23 | ![3](https://github.com/user-attachments/assets/0ae69162-face-43db-beb7-20d6e7da292d)
24 | 
25 | 
26 | _________________________________________________________________________________
27 | 
28 | # 4. Image Gallery for Community Events
29 | 
30 | ![4](https://github.com/user-attachments/assets/7560ad29-0315-498d-8a9c-572dff06c0d5)
31 | 
32 | 
33 | _________________________________________________________________________________
34 | 
35 | # 5. Event Registration Form
36 | 
37 | ![5](https://github.com/user-attachments/assets/22bbf470-26da-46e3-9585-901c5fae5bbc)
38 | 
39 | 
40 | _________________________________________________________________________________
41 | 
42 | # 6. Event Feedback with Events Handling
43 | 
44 | ![6](https://github.com/user-attachments/assets/4b3095c4-b38c-47e6-acc4-54f34ffc92b4)
45 | 
46 | 
47 | _________________________________________________________________________________
48 | 
49 | # 7.  Video Invite with Media Events
50 | 
51 | ![7](https://github.com/user-attachments/assets/d2e90f45-62f5-46ac-9df2-8af7820c07b3)
52 | 
53 | 
54 | _________________________________________________________________________________
55 | 
56 | # 8. Saving User Preferences
57 | 
58 | ![8](https://github.com/user-attachments/assets/e0d14ea3-6f2f-486a-a6e5-df9f393fda9d)
59 | 
60 | 
61 | _________________________________________________________________________________
62 | 
63 | # 9. Geolocation for Event Mapping
64 | 
65 | ![9](https://github.com/user-attachments/assets/98bf2ca8-0df7-4d78-8c1b-9a31904ca572)
66 | 
67 | 
68 | ________________________________________________________________________________
69 | 
70 | # 10. Debugging with Chrome DevTools
71 | 
72 | ![10 1](https://github.com/user-attachments/assets/733cad27-98df-45a8-b431-66958c3aa41c)
73 | 
74 | ![10 2](https://github.com/user-attachments/assets/ce9174ed-93c2-4097-baa1-585026c91209)
75 | 
76 | ![10 3](https://github.com/user-attachments/assets/b989c444-076d-4694-a7de-c2f4e821c551)
77 | 


--------------------------------------------------------------------------------
/Module-2_ANSI SQL/Implementation.txt:
--------------------------------------------------------------------------------
  1 |  
  2 | 1.  SELECT u.full_name, e.title, e.start_date
  3 |        FROM Users u
  4 |        JOIN Registrations r ON u.user_id = r.user_id
  5 |        JOIN Events e ON r.event_id = e.event_id
  6 |        WHERE e.status = 'upcoming' AND u.city = e.city
  7 |        ORDER BY e.start_date;
  8 | 
  9 | 2.  SELECT e.title, AVG(f.rating) AS avg_rating
 10 |        FROM Events e
 11 |        JOIN Feedback f ON e.event_id = f.event_id
 12 |        GROUP BY e.event_id
 13 |        HAVING COUNT(f.feedback_id) >= 10
 14 |        ORDER BY avg_rating DESC;
 15 | 
 16 | 3.  SELECT u.full_name, u.email
 17 |        FROM Users u
 18 |        WHERE u.user_id NOT IN (
 19 |            SELECT r.user_id FROM Registrations r
 20 |            WHERE r.registration_date >= CURDATE() - INTERVAL 90 DAY
 21 |        );
 22 | 
 23 | 4.  SELECT e.title, COUNT(*) AS session_count
 24 |        FROM Sessions s
 25 |        JOIN Events e ON s.event_id = e.event_id
 26 |        WHERE TIME(s.start_time) BETWEEN '10:00:00' AND '12:00:00'
 27 |        GROUP BY e.event_id;
 28 | 
 29 | 5.  SELECT u.city, COUNT(DISTINCT r.user_id) AS num_registrations
 30 |        FROM Registrations r
 31 |        JOIN Users u ON r.user_id = u.user_id
 32 |        GROUP BY u.city
 33 |        ORDER BY num_registrations DESC
 34 |        LIMIT 5;
 35 | 
 36 | 6.  SELECT e.title,
 37 |               SUM(CASE WHEN r.resource_type = 'pdf' THEN 1 ELSE 0 END) AS pdfs,
 38 |               SUM(CASE WHEN r.resource_type = 'image' THEN 1 ELSE 0 END) AS images,
 39 |               SUM(CASE WHEN r.resource_type = 'link' THEN 1 ELSE 0 END) AS links
 40 |        FROM Events e
 41 |        LEFT JOIN Resources r ON e.event_id = r.event_id
 42 |        GROUP BY e.event_id;
 43 | 
 44 | 7.  SELECT u.full_name, e.title, f.rating, f.comments
 45 |        FROM Feedback f
 46 |        JOIN Users u ON f.user_id = u.user_id
 47 |        JOIN Events e ON f.event_id = e.event_id
 48 |        WHERE f.rating < 3;
 49 | 
 50 | 8.  SELECT e.title, COUNT(s.session_id) AS session_count
 51 |        FROM Events e
 52 |        LEFT JOIN Sessions s ON e.event_id = s.event_id
 53 |        WHERE e.status = 'upcoming'
 54 |        GROUP BY e.event_id;
 55 | 
 56 | 9.  SELECT u.full_name AS organizer_name,
 57 |               COUNT(e.event_id) AS total_events,
 58 |               SUM(e.status = 'upcoming') AS upcoming,
 59 |               SUM(e.status = 'completed') AS completed,
 60 |               SUM(e.status = 'cancelled') AS cancelled
 61 |        FROM Users u
 62 |        JOIN Events e ON u.user_id = e.organizer_id
 63 |        GROUP BY u.user_id;
 64 | 
 65 | 10. SELECT e.title
 66 |        FROM Events e
 67 |        JOIN Registrations r ON e.event_id = r.event_id
 68 |        WHERE e.event_id NOT IN (
 69 |            SELECT f.event_id FROM Feedback f
 70 |        )
 71 |        GROUP BY e.event_id;
 72 | 
 73 | 11. SELECT registration_date, COUNT(*) AS user_count
 74 |        FROM Users
 75 |        WHERE registration_date >= CURDATE() - INTERVAL 7 DAY
 76 |        GROUP BY registration_date;
 77 | 
 78 | 12. SELECT e.title
 79 |        FROM Events e
 80 |        JOIN Sessions s ON e.event_id = s.event_id
 81 |        GROUP BY e.event_id
 82 |        ORDER BY COUNT(s.session_id) DESC
 83 |        LIMIT 1;
 84 | 
 85 | 13. SELECT e.city, AVG(f.rating) AS avg_rating
 86 |        FROM Events e
 87 |        JOIN Feedback f ON e.event_id = f.event_id
 88 |        GROUP BY e.city;
 89 | 
 90 | 14. SELECT e.title, COUNT(r.user_id) AS total_registrations
 91 |        FROM Events e
 92 |        JOIN Registrations r ON e.event_id = r.event_id
 93 |        GROUP BY e.event_id
 94 |        ORDER BY total_registrations DESC
 95 |        LIMIT 3;
 96 | 
 97 | 15. SELECT s1.event_id, s1.title AS session1, s2.title AS session2
 98 |        FROM Sessions s1
 99 |        JOIN Sessions s2 ON s1.event_id = s2.event_id AND s1.session_id < s2.session_id
100 |        WHERE s1.start_time < s2.end_time AND s2.start_time < s1.end_time;
101 | 
102 | 16. SELECT full_name
103 |        FROM Users
104 |        WHERE registration_date >= CURDATE() - INTERVAL 30 DAY
105 |        AND user_id NOT IN (SELECT user_id FROM Registrations);
106 | 
107 | 17. SELECT speaker_name, COUNT(*) AS session_count
108 |        FROM Sessions
109 |        GROUP BY speaker_name
110 |        HAVING session_count > 1;
111 | 
112 | 18. SELECT e.title
113 |        FROM Events e
114 |        LEFT JOIN Resources r ON e.event_id = r.event_id
115 |        WHERE r.resource_id IS NULL;
116 | 
117 | 19. SELECT e.title, COUNT(r.user_id) AS total_registrations, AVG(f.rating) AS avg_rating
118 |        FROM Events e
119 |        LEFT JOIN Registrations r ON e.event_id = r.event_id
120 |        LEFT JOIN Feedback f ON e.event_id = f.event_id
121 |        WHERE e.status = 'completed'
122 |        GROUP BY e.event_id;
123 | 
124 | 20. SELECT u.full_name,
125 |               COUNT(DISTINCT r.event_id) AS events_attended,
126 |               COUNT(DISTINCT f.feedback_id) AS feedbacks_given
127 |        FROM Users u
128 |        LEFT JOIN Registrations r ON u.user_id = r.user_id
129 |        LEFT JOIN Feedback f ON u.user_id = f.user_id
130 |        GROUP BY u.user_id;
131 | 
132 | 21. SELECT u.full_name, COUNT(f.feedback_id) AS feedback_count
133 |        FROM Users u
134 |        JOIN Feedback f ON u.user_id = f.user_id
135 |        GROUP BY u.user_id
136 |        ORDER BY feedback_count DESC
137 |        LIMIT 5;
138 | 
139 | 22. SELECT user_id, event_id, COUNT(*) AS times_registered
140 |        FROM Registrations
141 |        GROUP BY user_id, event_id
142 |        HAVING times_registered > 1;
143 | 23. SELECT DATE_FORMAT(registration_date, '%Y-%m') AS month, COUNT(*) AS registrations
144 |        FROM Registrations
145 |        WHERE registration_date >= CURDATE() - INTERVAL 12 MONTH
146 |        GROUP BY month;
147 | 24. SELECT e.title, AVG(TIMESTAMPDIFF(MINUTE, s.start_time, s.end_time)) AS avg_duration
148 |        FROM Events e
149 |        JOIN Sessions s ON e.event_id = s.event_id
150 |        GROUP BY e.event_id;
151 | 
152 | 25. SELECT e.title
153 |        FROM Events e
154 |        LEFT JOIN Sessions s ON e.event_id = s.event_id
155 |        WHERE s.session_id IS NULL;
156 | 


--------------------------------------------------------------------------------
/Module-1__HTML5/index.html:
--------------------------------------------------------------------------------
  1 | <!DOCTYPE html>
  2 | <html lang="en">
  3 | <head>
  4 |     <meta charset="UTF-8">
  5 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6 |     <title>HTML5 Base Template</title>
  7 |     <style>
  8 |         #welcomeBanner {
  9 |             background-color: #2196f3;
 10 |             color: white;
 11 |             padding: 16px;
 12 |             text-align: center;
 13 |             margin-bottom: 20px;
 14 |         }
 15 |         .highlight {
 16 |             background: rgb(255, 34, 0);
 17 |             padding: 2px 6px;
 18 |             border-radius: 3px;
 19 |         }
 20 |         .event-img {
 21 |             width: 120px;
 22 |             height: 80px;
 23 |             border: 3px solid #2196f3;
 24 |             border-radius: 8px;
 25 |             margin-bottom: 6px;
 26 |             object-fit: cover;
 27 |     }
 28 |     </style>
 29 | </head>
 30 | <body>
 31 |     <!-- Welcome Banner -->
 32 |     <div id="welcomeBanner">
 33 |         Welcome, <span class="highlight">User</span>!
 34 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 35 |     </div>
 36 |     <!-- Navigation -->
 37 |     <nav>
 38 |         <ul>
 39 |             <li><a href="#home" class="highlight">Home</a></li>
 40 |             <li><a href="#events">Events</a></li>
 41 |             <li><a href="#contact">Contact</a></li>
 42 |             <li><a href="help.html" target="_blank">Help</a></li>
 43 |         </ul>
 44 |     </nav>
 45 |     <!-- Main -->
 46 |     <main>
 47 |         <section id="home">
 48 |             <h1>Welcome to the Portal</h1>
 49 |             <p class="highlight">This is the base HTML5 template.</p>
 50 |         </section>
 51 |             <section id="events">
 52 |             <h2>Events</h2>
 53 |             <p>The Image Gallery.</p>
 54 |             <table style="width:100%; margin-top:20px; text-align:center;">
 55 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 56 |                 <tr>
 57 |                     <td>
 58 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 59 |                         <div>Bug</div>
 60 |                     </td>
 61 |                     
 62 |                 </tr>
 63 |             </table>
 64 |         </section>
 65 |         <!-- ...existing code... -->
 66 | <section id="register">
 67 |     <h2>Event Registration</h2>
 68 |     <form id="eventForm" style="max-width:400px; margin:auto; background:#f5faff; padding:20px; border-radius:10px; box-shadow:0 2px 8px #2196f344;">
 69 |         <label for="name">Name:</label><br>
 70 |         <input type="text" id="name" name="name" placeholder="Your Name" required autofocus style="width:100%;padding:8px;margin-bottom:10px;"><br>
 71 | 
 72 |         <label for="email">Email:</label><br>
 73 |         <input type="email" id="email" name="email" placeholder="you@email.com" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 74 | 
 75 |         <label for="phone">Phone:</label><br>
 76 |         <input type="tel" id="phone" name="phone" placeholder="10-digit phone" required style="width:100%;padding:8px;margin-bottom:10px;" onblur="validatePhone()"><br>
 77 |         <span id="phoneError" style="color:red;font-size:0.9em;"></span>
 78 | 
 79 |         <label for="date">Event Date:</label><br>
 80 |         <input type="date" id="date" name="date" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 81 | 
 82 |         <label for="eventType">Event Type:</label><br>
 83 |         <select id="eventType" name="eventType" required style="width:100%;padding:8px;margin-bottom:10px;" onchange="showFee();saveEventTypePreference();">
 84 |             <option value="">Select an event</option>
 85 |             <option value="festival" data-fee="Free">Spring Festival</option>
 86 |             <option value="meetup" data-fee="₹100">Tech Meetup</option>
 87 |             <option value="run" data-fee="₹200">Charity Run</option>
 88 |             <option value="workshop" data-fee="₹150">Art Workshop</option>
 89 |         </select>
 90 |         <span id="feeDisplay" style="margin-left:10px;color:#2196f3;font-weight:bold;"></span><br>
 91 | 
 92 |         <label for="message">Message:</label><br>
 93 |         <textarea id="message" name="message" placeholder="Any special requests?" rows="3" style="width:100%;padding:8px;margin-bottom:10px;" onkeyup="countChars()"></textarea>
 94 |         <span id="charCount" style="font-size:0.9em;color:#555;"></span><br>
 95 | 
 96 |         <button type="submit" id="submitBtn" style="background:#2196f3;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;" onclick="showConfirmation(event)">Register</button>
 97 |         <br><br>
 98 |         <output id="confirmation" style="color:green;font-weight:bold;"></output>
 99 |     </form>
100 |     <button id="clearPrefsBtn" style="margin-top:10px;background:#f44336;color:white;padding:8px 16px;border:none;border-radius:5px;cursor:pointer;">Clear Preferences</button>
101 | </section>
102 | 
103 | <!-- Feedback Section -->
104 | <section id="feedback" style="max-width:400px; margin:40px auto;">
105 |     <h2>Event Feedback</h2>
106 |     <textarea id="feedbackText" rows="3" placeholder="Share your feedback..." style="width:100%;padding:8px;" onkeyup="countFeedbackChars()"></textarea>
107 |     <span id="feedbackCharCount" style="font-size:0.9em;color:#555;"></span>
108 | </section>
109 | 
110 | <script>
111 | function validatePhone() {
112 |     const phone = document.getElementById('phone').value;
113 |     const error = document.getElementById('phoneError');
114 |     if (!/^\d{10}$/.test(phone)) {
115 |         error.textContent = "Please enter a valid 10-digit phone number.";
116 |     } else {
117 |         error.textContent = "";
118 |     }
119 | }
120 | 
121 | function showFee() {
122 |     const select = document.getElementById('eventType');
123 |     const feeDisplay = document.getElementById('feeDisplay');
124 |     const selected = select.options[select.selectedIndex];
125 |     const fee = selected.getAttribute('data-fee');
126 |     feeDisplay.textContent = fee ? `Fee: ${fee}` : '';
127 | }
128 | 
129 | function showConfirmation(e) {
130 |     e.preventDefault();
131 |     document.getElementById('confirmation').value = "Thank you for registering!";
132 | }
133 | 
134 | function countChars() {
135 |     const msg = document.getElementById('message').value;
136 |     document.getElementById('charCount').textContent = `${msg.length} characters`;
137 | }
138 | 
139 | function countFeedbackChars() {
140 |     const msg = document.getElementById('feedbackText').value;
141 |     document.getElementById('feedbackCharCount').textContent = `${msg.length} characters`;
142 | }
143 | 
144 | // Enlarge image on double-click
145 | document.addEventListener('DOMContentLoaded', function() {
146 |     document.querySelectorAll('.event-img').forEach(function(img) {
147 |         img.ondblclick = function() {
148 |             if (!img.classList.contains('enlarged')) {
149 |                 img.style.transform = "scale(2)";
150 |                 img.style.zIndex = 10;
151 |                 img.style.transition = "transform 0.3s";
152 |                 img.classList.add('enlarged');
153 |             } else {
154 |                 img.style.transform = "scale(1)";
155 |                 img.classList.remove('enlarged');
156 |             }
157 |         };
158 |     });
159 | });
160 | </script>
161 | <script>
162 | // ...existing functions...
163 | 
164 | // Save selected event type to localStorage
165 | function saveEventTypePreference() {
166 |     const eventType = document.getElementById('eventType').value;
167 |     localStorage.setItem('preferredEventType', eventType);
168 | }
169 | 
170 | // On page load, pre-select preferred event type if available
171 | window.addEventListener('DOMContentLoaded', function() {
172 |     // ...existing code...
173 |     const preferred = localStorage.getItem('preferredEventType');
174 |     if (preferred) {
175 |         document.getElementById('eventType').value = preferred;
176 |         showFee();
177 |     }
178 | });
179 | 
180 | // Clear preferences button
181 | document.getElementById('clearPrefsBtn').addEventListener('click', function() {
182 |     localStorage.clear();
183 |     sessionStorage.clear();
184 |     document.getElementById('eventType').value = "";
185 |     document.getElementById('feeDisplay').textContent = "";
186 |     alert('Preferences cleared!');
187 | });
188 | </script>
189 | <!-- ...existing code... -->
190 |  <!-- Video Invite Section -->
191 | <section id="video-invite" style="max-width:500px; margin:40px auto;">
192 |     <h2>Event Promo Video</h2>
193 |     <video id="promoVideo" width="100%" controls oncanplay="videoReadyMessage()">
194 |         <source src="videos/event-promo.mp4" type="video/mp4">
195 |         Your browser does not support the video tag.
196 |     </video>
197 |     <div id="videoStatus" style="color:green; font-weight:bold; margin-top:10px;"></div>
198 | </section>
199 | 
200 | <script>
201 | function videoReadyMessage() {
202 |     document.getElementById('videoStatus').textContent = "Video ready to play!";
203 | }
204 | 
205 | // Warn user if they try to leave with unfinished form
206 | let formStarted = false;
207 | document.getElementById('eventForm').addEventListener('input', function() {
208 |     formStarted = true;
209 | });
210 | window.onbeforeunload = function(e) {
211 |     if (formStarted && !document.getElementById('confirmation').value) {
212 |         return "You have unsaved changes. Are you sure you want to leave?";
213 |     }
214 | };
215 | </script>
216 | 
217 | <!-- ...existing code... -->
218 | 
219 | <!-- Geolocation Section -->
220 | <section id="geolocation" style="max-width:400px; margin:40px auto;">
221 |     <h2>Find Nearby Events</h2>
222 |     <button id="findEventsBtn" style="background:#4caf50;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;">Find Nearby Events</button>
223 |     <div id="geoResult" style="margin-top:15px; color:#333; font-weight:bold;"></div>
224 | </section>
225 | 
226 | <script>
227 | document.getElementById('findEventsBtn').addEventListener('click', function() {
228 |     const geoResult = document.getElementById('geoResult');
229 |     geoResult.textContent = "Locating...";
230 |     if (!navigator.geolocation) {
231 |         geoResult.textContent = "Geolocation is not supported by your browser.";
232 |         return;
233 |     }
234 |     navigator.geolocation.getCurrentPosition(
235 |         function(position) {
236 |             geoResult.textContent = `Your coordinates: Latitude ${position.coords.latitude.toFixed(5)}, Longitude ${position.coords.longitude.toFixed(5)}`;
237 |         },
238 |         function(error) {
239 |             switch(error.code) {
240 |                 case error.PERMISSION_DENIED:
241 |                     geoResult.textContent = "Permission denied. Unable to access your location.";
242 |                     break;
243 |                 case error.POSITION_UNAVAILABLE:
244 |                     geoResult.textContent = "Location information is unavailable.";
245 |                     break;
246 |                 case error.TIMEOUT:
247 |                     geoResult.textContent = "Location request timed out. Please try again.";
248 |                     break;
249 |                 default:
250 |                     geoResult.textContent = "An unknown error occurred.";
251 |             }
252 |         },
253 |         {
254 |             enableHighAccuracy: true,
255 |             timeout: 10000,
256 |             maximumAge: 0
257 |         }
258 |     );
259 | });
260 | </script>
261 | <!-- ...existing code... -->
262 |     <!-- Footer -->
263 |     <footer>
264 |         <p>&copy; 2025 CopyRights at NK</p>
265 |     </footer>
266 | </body>
267 | </html>
268 | 


--------------------------------------------------------------------------------
/Module-1__HTML5/Steps-with-code.txt:
--------------------------------------------------------------------------------
   1 | # HTML5 Exercises
   2 | # Project Theme: Local Community Event Portal
   3 | 
   4 | _________________________________________________________________________________
   5 | 
   6 | # 1.  Create the HTML5 Base Template
   7 | 
   8 | <!DOCTYPE html>
   9 | <html lang="en">
  10 | <head>
  11 |     <meta charset="UTF-8">
  12 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  13 |     <title>HTML5 Base Template</title>
  14 | </head>
  15 | <body>
  16 |     <!-- Navigation -->
  17 |     <nav>
  18 |         <!-- Navigation links go here -->
  19 |         <ul>
  20 |             <li><a href="#">Home</a></li>
  21 |             <!-- Add more links as needed -->
  22 |         </ul>
  23 |     </nav>
  24 | 
  25 |     <!-- Main -->
  26 |     <main>
  27 |         <!-- Main content goes here -->
  28 |         <h1>Welcome to the Portal</h1>
  29 |         <p>This is the base HTML5 template.</p>
  30 |     </main>
  31 | 
  32 |     <!-- Footer -->
  33 |     <footer>
  34 |         <!-- Footer content goes here -->
  35 |         <p>&copy; 2025 CopyRights at NK</p>
  36 |     </footer>
  37 | </body>
  38 | </html>
  39 | 
  40 | _________________________________________________________________________________
  41 | 
  42 | 
  43 | # 2. Navigation and Linking
  44 | 
  45 | <!DOCTYPE html>
  46 | <html lang="en">
  47 | <head>
  48 |     <meta charset="UTF-8">
  49 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  50 |     <title>HTML5 Base Template</title>
  51 | </head>
  52 | <body>
  53 |     <!-- Navigation -->
  54 |     <nav>
  55 |         <ul>
  56 |             <li><a href="#home">Home</a></li>
  57 |             <li><a href="#events">Events</a></li>
  58 |             <li><a href="#contact">Contact</a></li>
  59 |             <li><a href="help.html" target="_blank">Help</a></li>
  60 |         </ul>
  61 |     </nav>
  62 | 
  63 |     <!-- Main -->
  64 |     <main>
  65 |         <section id="home">
  66 |             <h1>Welcome to the Portal</h1>
  67 |             <p>This is the base HTML5 template.</p>
  68 |         </section>
  69 |         <section id="events">
  70 |             <h2>Events</h2>
  71 |             <p>Details about upcoming events will appear here.</p>
  72 |         </section>
  73 |         <section id="contact">
  74 |             <h2>Contact</h2>
  75 |             <p>Contact information goes here.</p>
  76 |         </section>
  77 |     </main>
  78 | 
  79 |     <!-- Footer -->
  80 |     <footer>
  81 |         <p>&copy; 2025 CopyRights at NK</p>
  82 |     </footer>
  83 | </body>
  84 | </html>
  85 | 
  86 | _________________________________________________________________________________
  87 | 
  88 | # 3. Welcome Message with Styling and ID/Class
  89 | <!DOCTYPE html>
  90 | <html lang="en">
  91 | <<head>
  92 |     <meta charset="UTF-8">
  93 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  94 |     <title>HTML5 Base Template</title>
  95 |     <style>
  96 |         #welcomeBanner {
  97 |             background-color: #2196f3;
  98 |             color: white;
  99 |             padding: 16px;
 100 |             text-align: center;
 101 |             margin-bottom: 20px;
 102 |         }
 103 |         .highlight {
 104 |             background: yellow;
 105 |             padding: 2px 6px;
 106 |             border-radius: 3px;
 107 |         }
 108 |     </style>
 109 | </head>
 110 | <body>
 111 |     <!-- Welcome Banner -->
 112 |     <div id="welcomeBanner">
 113 |         Welcome, <span class="highlight">User</span>!
 114 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 115 |     </div>
 116 |     <!-- Navigation -->
 117 |     <nav>
 118 |         <ul>
 119 |             <li><a href="#home" class="highlight">Home</a></li>
 120 |             <li><a href="#events">Events</a></li>
 121 |             <li><a href="#contact">Contact</a></li>
 122 |             <li><a href="help.html" target="_blank">Help</a></li>
 123 |         </ul>
 124 |     </nav>
 125 |     <!-- Main -->
 126 |     <main>
 127 |         <section id="home">
 128 |             <h1>Welcome to the Portal</h1>
 129 |             <p class="highlight">This is the base HTML5 template.</p>
 130 |         </section>
 131 |         <section id="events">
 132 |             <h2>Events</h2>
 133 |             <p>Details about upcoming events will appear here.</p>
 134 |         </section>
 135 |         <section id="contact">
 136 |             <h2>Contact</h2>
 137 |             <p>Contact information goes here.</p>
 138 |         </section>
 139 |     </main>
 140 |     <!-- Footer -->
 141 |     <footer>
 142 |         <p>&copy; 2025 CopyRights at NK</p>
 143 |     </footer>
 144 | </body>
 145 | </html>
 146 | _________________________________________________________________________________
 147 | 
 148 | # 4. Image Gallery for Community Events
 149 | 
 150 | <!DOCTYPE html>
 151 | <html lang="en">
 152 | <head>
 153 |     <meta charset="UTF-8">
 154 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 155 |     <title>HTML5 Base Template</title>
 156 |     <style>
 157 |         #welcomeBanner {
 158 |             background-color: #2196f3;
 159 |             color: white;
 160 |             padding: 16px;
 161 |             text-align: center;
 162 |             margin-bottom: 20px;
 163 |         }
 164 |         .highlight {
 165 |             background: rgb(255, 34, 0);
 166 |             padding: 2px 6px;
 167 |             border-radius: 3px;
 168 |         }
 169 |         .event-img {
 170 |             width: 120px;
 171 |             height: 80px;
 172 |             border: 3px solid #2196f3;
 173 |             border-radius: 8px;
 174 |             margin-bottom: 6px;
 175 |             object-fit: cover;
 176 |     }
 177 |     </style>
 178 | </head>
 179 | <body>
 180 |     <!-- Welcome Banner -->
 181 |     <div id="welcomeBanner">
 182 |         Welcome, <span class="highlight">User</span>!
 183 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 184 |     </div>
 185 |     <!-- Navigation -->
 186 |     <nav>
 187 |         <ul>
 188 |             <li><a href="#home" class="highlight">Home</a></li>
 189 |             <li><a href="#events">Events</a></li>
 190 |             <li><a href="#contact">Contact</a></li>
 191 |             <li><a href="help.html" target="_blank">Help</a></li>
 192 |         </ul>
 193 |     </nav>
 194 |     <!-- Main -->
 195 |     <main>
 196 |         <section id="home">
 197 |             <h1>Welcome to the Portal</h1>
 198 |             <p class="highlight">This is the base HTML5 template.</p>
 199 |         </section>
 200 |             <section id="events">
 201 |             <h2>Events</h2>
 202 |             <p>The Image Gallery.</p>
 203 |             <table style="width:100%; margin-top:20px; text-align:center;">
 204 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 205 |                 <tr>
 206 |                     <td>
 207 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 208 |                         <div>Bug</div>
 209 |                     </td>
 210 |                     
 211 |                 </tr>
 212 |             </table>
 213 |         </section>
 214 |         <section id="contact">
 215 |             <h2>Contact</h2>
 216 |             <p>Contact information goes here.</p>
 217 |         </section>
 218 |     </main>
 219 |     <!-- Footer -->
 220 |     <footer>
 221 |         <p>&copy; 2025 CopyRights at NK</p>
 222 |     </footer>
 223 | </body>
 224 | </html>
 225 | 
 226 | _________________________________________________________________________________
 227 | 
 228 | # 5. Event Registration Form
 229 | 
 230 | <!DOCTYPE html>
 231 | <html lang="en">
 232 | <head>
 233 |     <meta charset="UTF-8">
 234 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 235 |     <title>HTML5 Base Template</title>
 236 |     <style>
 237 |         #welcomeBanner {
 238 |             background-color: #2196f3;
 239 |             color: white;
 240 |             padding: 16px;
 241 |             text-align: center;
 242 |             margin-bottom: 20px;
 243 |         }
 244 |         .highlight {
 245 |             background: rgb(255, 34, 0);
 246 |             padding: 2px 6px;
 247 |             border-radius: 3px;
 248 |         }
 249 |         .event-img {
 250 |             width: 120px;
 251 |             height: 80px;
 252 |             border: 3px solid #2196f3;
 253 |             border-radius: 8px;
 254 |             margin-bottom: 6px;
 255 |             object-fit: cover;
 256 |     }
 257 |     </style>
 258 | </head>
 259 | <body>
 260 |     <!-- Welcome Banner -->
 261 |     <div id="welcomeBanner">
 262 |         Welcome, <span class="highlight">User</span>!
 263 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 264 |     </div>
 265 |     <!-- Navigation -->
 266 |     <nav>
 267 |         <ul>
 268 |             <li><a href="#home" class="highlight">Home</a></li>
 269 |             <li><a href="#events">Events</a></li>
 270 |             <li><a href="#contact">Contact</a></li>
 271 |             <li><a href="help.html" target="_blank">Help</a></li>
 272 |         </ul>
 273 |     </nav>
 274 |     <!-- Main -->
 275 |     <main>
 276 |         <section id="home">
 277 |             <h1>Welcome to the Portal</h1>
 278 |             <p class="highlight">This is the base HTML5 template.</p>
 279 |         </section>
 280 |             <section id="events">
 281 |             <h2>Events</h2>
 282 |             <p>The Image Gallery.</p>
 283 |             <table style="width:100%; margin-top:20px; text-align:center;">
 284 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 285 |                 <tr>
 286 |                     <td>
 287 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 288 |                         <div>Bug</div>
 289 |                     </td>
 290 |                     
 291 |                 </tr>
 292 |             </table>
 293 |         </section>
 294 |         <section id="register">
 295 |     <h2>Event Registration</h2>
 296 |     <form id="eventForm" style="max-width:400px; margin:auto; background:#f5faff; padding:20px; border-radius:10px; box-shadow:0 2px 8px #2196f344;">
 297 |         <label for="name">Name:</label><br>
 298 |         <input type="text" id="name" name="name" placeholder="Your Name" required autofocus style="width:100%;padding:8px;margin-bottom:10px;"><br>
 299 | 
 300 |         <label for="email">Email:</label><br>
 301 |         <input type="email" id="email" name="email" placeholder="you@email.com" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 302 | 
 303 |         <label for="date">Event Date:</label><br>
 304 |         <input type="date" id="date" name="date" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 305 | 
 306 |         <label for="eventType">Event Type:</label><br>
 307 |         <select id="eventType" name="eventType" required style="width:100%;padding:8px;margin-bottom:10px;">
 308 |             <option value="">Select an event</option>
 309 |             <option value="festival">Spring Festival</option>
 310 |             <option value="meetup">Tech Meetup</option>
 311 |             <option value="run">Charity Run</option>
 312 |             <option value="workshop">Art Workshop</option>
 313 |         </select><br>
 314 | 
 315 |         <label for="message">Message:</label><br>
 316 |         <textarea id="message" name="message" placeholder="Any special requests?" rows="3" style="width:100%;padding:8px;margin-bottom:10px;"></textarea><br>
 317 | 
 318 |         <button type="submit" style="background:#2196f3;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;">Register</button>
 319 |         <br><br>
 320 |         <output id="confirmation" style="color:green;font-weight:bold;"></output>
 321 |     </form>
 322 | </section>
 323 | <script>
 324 | document.getElementById('eventForm').addEventListener('submit', function(e) {
 325 |     e.preventDefault();
 326 |     document.getElementById('confirmation').value = "Thank you for registering!";
 327 | });
 328 | </script>
 329 |     </main>
 330 |     <!-- Footer -->
 331 |     <footer>
 332 |         <p>&copy; 2025 CopyRights at NK</p>
 333 |     </footer>
 334 | </body>
 335 | </html>
 336 | 
 337 | _________________________________________________________________________________
 338 | 
 339 | # 6. Event Feedback with Events Handling
 340 | 
 341 | <!DOCTYPE html>
 342 | <html lang="en">
 343 | <head>
 344 |     <meta charset="UTF-8">
 345 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 346 |     <title>HTML5 Base Template</title>
 347 |     <style>
 348 |         #welcomeBanner {
 349 |             background-color: #2196f3;
 350 |             color: white;
 351 |             padding: 16px;
 352 |             text-align: center;
 353 |             margin-bottom: 20px;
 354 |         }
 355 |         .highlight {
 356 |             background: rgb(255, 34, 0);
 357 |             padding: 2px 6px;
 358 |             border-radius: 3px;
 359 |         }
 360 |         .event-img {
 361 |             width: 120px;
 362 |             height: 80px;
 363 |             border: 3px solid #2196f3;
 364 |             border-radius: 8px;
 365 |             margin-bottom: 6px;
 366 |             object-fit: cover;
 367 |     }
 368 |     </style>
 369 | </head>
 370 | <body>
 371 |     <!-- Welcome Banner -->
 372 |     <div id="welcomeBanner">
 373 |         Welcome, <span class="highlight">User</span>!
 374 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 375 |     </div>
 376 |     <!-- Navigation -->
 377 |     <nav>
 378 |         <ul>
 379 |             <li><a href="#home" class="highlight">Home</a></li>
 380 |             <li><a href="#events">Events</a></li>
 381 |             <li><a href="#contact">Contact</a></li>
 382 |             <li><a href="help.html" target="_blank">Help</a></li>
 383 |         </ul>
 384 |     </nav>
 385 |     <!-- Main -->
 386 |     <main>
 387 |         <section id="home">
 388 |             <h1>Welcome to the Portal</h1>
 389 |             <p class="highlight">This is the base HTML5 template.</p>
 390 |         </section>
 391 |             <section id="events">
 392 |             <h2>Events</h2>
 393 |             <p>The Image Gallery.</p>
 394 |             <table style="width:100%; margin-top:20px; text-align:center;">
 395 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 396 |                 <tr>
 397 |                     <td>
 398 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 399 |                         <div>Bug</div>
 400 |                     </td>
 401 |                     
 402 |                 </tr>
 403 |             </table>
 404 |         </section>
 405 |         <!-- ...existing code... -->
 406 | <section id="register">
 407 |     <h2>Event Registration</h2>
 408 |     <form id="eventForm" style="max-width:400px; margin:auto; background:#f5faff; padding:20px; border-radius:10px; box-shadow:0 2px 8px #2196f344;">
 409 |         <label for="name">Name:</label><br>
 410 |         <input type="text" id="name" name="name" placeholder="Your Name" required autofocus style="width:100%;padding:8px;margin-bottom:10px;"><br>
 411 | 
 412 |         <label for="email">Email:</label><br>
 413 |         <input type="email" id="email" name="email" placeholder="you@email.com" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 414 | 
 415 |         <label for="phone">Phone:</label><br>
 416 |         <input type="tel" id="phone" name="phone" placeholder="10-digit phone" required style="width:100%;padding:8px;margin-bottom:10px;" onblur="validatePhone()"><br>
 417 |         <span id="phoneError" style="color:red;font-size:0.9em;"></span>
 418 | 
 419 |         <label for="date">Event Date:</label><br>
 420 |         <input type="date" id="date" name="date" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 421 | 
 422 |         <label for="eventType">Event Type:</label><br>
 423 |         <select id="eventType" name="eventType" required style="width:100%;padding:8px;margin-bottom:10px;" onchange="showFee()">
 424 |             <option value="">Select an event</option>
 425 |             <option value="festival" data-fee="Free">Spring Festival</option>
 426 |             <option value="meetup" data-fee="₹100">Tech Meetup</option>
 427 |             <option value="run" data-fee="₹200">Charity Run</option>
 428 |             <option value="workshop" data-fee="₹150">Art Workshop</option>
 429 |         </select>
 430 |         <span id="feeDisplay" style="margin-left:10px;color:#2196f3;font-weight:bold;"></span><br>
 431 | 
 432 |         <label for="message">Message:</label><br>
 433 |         <textarea id="message" name="message" placeholder="Any special requests?" rows="3" style="width:100%;padding:8px;margin-bottom:10px;" onkeyup="countChars()"></textarea>
 434 |         <span id="charCount" style="font-size:0.9em;color:#555;"></span><br>
 435 | 
 436 |         <button type="submit" id="submitBtn" style="background:#2196f3;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;" onclick="showConfirmation(event)">Register</button>
 437 |         <br><br>
 438 |         <output id="confirmation" style="color:green;font-weight:bold;"></output>
 439 |     </form>
 440 | </section>
 441 | 
 442 | <!-- Feedback Section -->
 443 | <section id="feedback" style="max-width:400px; margin:40px auto;">
 444 |     <h2>Event Feedback</h2>
 445 |     <textarea id="feedbackText" rows="3" placeholder="Share your feedback..." style="width:100%;padding:8px;" onkeyup="countFeedbackChars()"></textarea>
 446 |     <span id="feedbackCharCount" style="font-size:0.9em;color:#555;"></span>
 447 | </section>
 448 | 
 449 | <script>
 450 | function validatePhone() {
 451 |     const phone = document.getElementById('phone').value;
 452 |     const error = document.getElementById('phoneError');
 453 |     if (!/^\d{10}$/.test(phone)) {
 454 |         error.textContent = "Please enter a valid 10-digit phone number.";
 455 |     } else {
 456 |         error.textContent = "";
 457 |     }
 458 | }
 459 | 
 460 | function showFee() {
 461 |     const select = document.getElementById('eventType');
 462 |     const feeDisplay = document.getElementById('feeDisplay');
 463 |     const selected = select.options[select.selectedIndex];
 464 |     const fee = selected.getAttribute('data-fee');
 465 |     feeDisplay.textContent = fee ? `Fee: ${fee}` : '';
 466 | }
 467 | 
 468 | function showConfirmation(e) {
 469 |     e.preventDefault();
 470 |     document.getElementById('confirmation').value = "Thank you for registering!";
 471 | }
 472 | 
 473 | function countChars() {
 474 |     const msg = document.getElementById('message').value;
 475 |     document.getElementById('charCount').textContent = `${msg.length} characters`;
 476 | }
 477 | 
 478 | function countFeedbackChars() {
 479 |     const msg = document.getElementById('feedbackText').value;
 480 |     document.getElementById('feedbackCharCount').textContent = `${msg.length} characters`;
 481 | }
 482 | 
 483 | // Enlarge image on double-click
 484 | document.addEventListener('DOMContentLoaded', function() {
 485 |     document.querySelectorAll('.event-img').forEach(function(img) {
 486 |         img.ondblclick = function() {
 487 |             if (!img.classList.contains('enlarged')) {
 488 |                 img.style.transform = "scale(2)";
 489 |                 img.style.zIndex = 10;
 490 |                 img.style.transition = "transform 0.3s";
 491 |                 img.classList.add('enlarged');
 492 |             } else {
 493 |                 img.style.transform = "scale(1)";
 494 |                 img.classList.remove('enlarged');
 495 |             }
 496 |         };
 497 |     });
 498 | });
 499 | </script>
 500 | <!-- ...existing code... -->
 501 |     <!-- Footer -->
 502 |     <footer>
 503 |         <p>&copy; 2025 CopyRights at NK</p>
 504 |     </footer>
 505 | </body>
 506 | </html>
 507 | 
 508 | _________________________________________________________________________________
 509 | 
 510 | # 7.  Video Invite with Media Events
 511 | 
 512 | <!DOCTYPE html>
 513 | <html lang="en">
 514 | <head>
 515 |     <meta charset="UTF-8">
 516 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 517 |     <title>HTML5 Base Template</title>
 518 |     <style>
 519 |         #welcomeBanner {
 520 |             background-color: #2196f3;
 521 |             color: white;
 522 |             padding: 16px;
 523 |             text-align: center;
 524 |             margin-bottom: 20px;
 525 |         }
 526 |         .highlight {
 527 |             background: rgb(255, 34, 0);
 528 |             padding: 2px 6px;
 529 |             border-radius: 3px;
 530 |         }
 531 |         .event-img {
 532 |             width: 120px;
 533 |             height: 80px;
 534 |             border: 3px solid #2196f3;
 535 |             border-radius: 8px;
 536 |             margin-bottom: 6px;
 537 |             object-fit: cover;
 538 |     }
 539 |     </style>
 540 | </head>
 541 | <body>
 542 |     <!-- Welcome Banner -->
 543 |     <div id="welcomeBanner">
 544 |         Welcome, <span class="highlight">User</span>!
 545 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 546 |     </div>
 547 |     <!-- Navigation -->
 548 |     <nav>
 549 |         <ul>
 550 |             <li><a href="#home" class="highlight">Home</a></li>
 551 |             <li><a href="#events">Events</a></li>
 552 |             <li><a href="#contact">Contact</a></li>
 553 |             <li><a href="help.html" target="_blank">Help</a></li>
 554 |         </ul>
 555 |     </nav>
 556 |     <!-- Main -->
 557 |     <main>
 558 |         <section id="home">
 559 |             <h1>Welcome to the Portal</h1>
 560 |             <p class="highlight">This is the base HTML5 template.</p>
 561 |         </section>
 562 |             <section id="events">
 563 |             <h2>Events</h2>
 564 |             <p>The Image Gallery.</p>
 565 |             <table style="width:100%; margin-top:20px; text-align:center;">
 566 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 567 |                 <tr>
 568 |                     <td>
 569 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 570 |                         <div>Bug</div>
 571 |                     </td>
 572 |                     
 573 |                 </tr>
 574 |             </table>
 575 |         </section>
 576 |         <!-- ...existing code... -->
 577 | <section id="register">
 578 |     <h2>Event Registration</h2>
 579 |     <form id="eventForm" style="max-width:400px; margin:auto; background:#f5faff; padding:20px; border-radius:10px; box-shadow:0 2px 8px #2196f344;">
 580 |         <label for="name">Name:</label><br>
 581 |         <input type="text" id="name" name="name" placeholder="Your Name" required autofocus style="width:100%;padding:8px;margin-bottom:10px;"><br>
 582 | 
 583 |         <label for="email">Email:</label><br>
 584 |         <input type="email" id="email" name="email" placeholder="you@email.com" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 585 | 
 586 |         <label for="phone">Phone:</label><br>
 587 |         <input type="tel" id="phone" name="phone" placeholder="10-digit phone" required style="width:100%;padding:8px;margin-bottom:10px;" onblur="validatePhone()"><br>
 588 |         <span id="phoneError" style="color:red;font-size:0.9em;"></span>
 589 | 
 590 |         <label for="date">Event Date:</label><br>
 591 |         <input type="date" id="date" name="date" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 592 | 
 593 |         <label for="eventType">Event Type:</label><br>
 594 |         <select id="eventType" name="eventType" required style="width:100%;padding:8px;margin-bottom:10px;" onchange="showFee()">
 595 |             <option value="">Select an event</option>
 596 |             <option value="festival" data-fee="Free">Spring Festival</option>
 597 |             <option value="meetup" data-fee="₹100">Tech Meetup</option>
 598 |             <option value="run" data-fee="₹200">Charity Run</option>
 599 |             <option value="workshop" data-fee="₹150">Art Workshop</option>
 600 |         </select>
 601 |         <span id="feeDisplay" style="margin-left:10px;color:#2196f3;font-weight:bold;"></span><br>
 602 | 
 603 |         <label for="message">Message:</label><br>
 604 |         <textarea id="message" name="message" placeholder="Any special requests?" rows="3" style="width:100%;padding:8px;margin-bottom:10px;" onkeyup="countChars()"></textarea>
 605 |         <span id="charCount" style="font-size:0.9em;color:#555;"></span><br>
 606 | 
 607 |         <button type="submit" id="submitBtn" style="background:#2196f3;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;" onclick="showConfirmation(event)">Register</button>
 608 |         <br><br>
 609 |         <output id="confirmation" style="color:green;font-weight:bold;"></output>
 610 |     </form>
 611 | </section>
 612 | 
 613 | <!-- Feedback Section -->
 614 | <section id="feedback" style="max-width:400px; margin:40px auto;">
 615 |     <h2>Event Feedback</h2>
 616 |     <textarea id="feedbackText" rows="3" placeholder="Share your feedback..." style="width:100%;padding:8px;" onkeyup="countFeedbackChars()"></textarea>
 617 |     <span id="feedbackCharCount" style="font-size:0.9em;color:#555;"></span>
 618 | </section>
 619 | 
 620 | <script>
 621 | function validatePhone() {
 622 |     const phone = document.getElementById('phone').value;
 623 |     const error = document.getElementById('phoneError');
 624 |     if (!/^\d{10}$/.test(phone)) {
 625 |         error.textContent = "Please enter a valid 10-digit phone number.";
 626 |     } else {
 627 |         error.textContent = "";
 628 |     }
 629 | }
 630 | 
 631 | function showFee() {
 632 |     const select = document.getElementById('eventType');
 633 |     const feeDisplay = document.getElementById('feeDisplay');
 634 |     const selected = select.options[select.selectedIndex];
 635 |     const fee = selected.getAttribute('data-fee');
 636 |     feeDisplay.textContent = fee ? `Fee: ${fee}` : '';
 637 | }
 638 | 
 639 | function showConfirmation(e) {
 640 |     e.preventDefault();
 641 |     document.getElementById('confirmation').value = "Thank you for registering!";
 642 | }
 643 | 
 644 | function countChars() {
 645 |     const msg = document.getElementById('message').value;
 646 |     document.getElementById('charCount').textContent = `${msg.length} characters`;
 647 | }
 648 | 
 649 | function countFeedbackChars() {
 650 |     const msg = document.getElementById('feedbackText').value;
 651 |     document.getElementById('feedbackCharCount').textContent = `${msg.length} characters`;
 652 | }
 653 | 
 654 | // Enlarge image on double-click
 655 | document.addEventListener('DOMContentLoaded', function() {
 656 |     document.querySelectorAll('.event-img').forEach(function(img) {
 657 |         img.ondblclick = function() {
 658 |             if (!img.classList.contains('enlarged')) {
 659 |                 img.style.transform = "scale(2)";
 660 |                 img.style.zIndex = 10;
 661 |                 img.style.transition = "transform 0.3s";
 662 |                 img.classList.add('enlarged');
 663 |             } else {
 664 |                 img.style.transform = "scale(1)";
 665 |                 img.classList.remove('enlarged');
 666 |             }
 667 |         };
 668 |     });
 669 | });
 670 | </script>
 671 | <!-- ...existing code... -->
 672 |  <!-- Video Invite Section -->
 673 | <section id="video-invite" style="max-width:500px; margin:40px auto;">
 674 |     <h2>Event Promo Video</h2>
 675 |     <video id="promoVideo" width="100%" controls oncanplay="videoReadyMessage()">
 676 |         <source src="videos/event-promo.mp4" type="video/mp4">
 677 |         Your browser does not support the video tag.
 678 |     </video>
 679 |     <div id="videoStatus" style="color:green; font-weight:bold; margin-top:10px;"></div>
 680 | </section>
 681 | 
 682 | <script>
 683 | function videoReadyMessage() {
 684 |     document.getElementById('videoStatus').textContent = "Video ready to play!";
 685 | }
 686 | 
 687 | // Warn user if they try to leave with unfinished form
 688 | let formStarted = false;
 689 | document.getElementById('eventForm').addEventListener('input', function() {
 690 |     formStarted = true;
 691 | });
 692 | window.onbeforeunload = function(e) {
 693 |     if (formStarted && !document.getElementById('confirmation').value) {
 694 |         return "You have unsaved changes. Are you sure you want to leave?";
 695 |     }
 696 | };
 697 | </script>
 698 |     <!-- Footer -->
 699 |     <footer>
 700 |         <p>&copy; 2025 CopyRights at NK</p>
 701 |     </footer>
 702 | </body>
 703 | </html>
 704 | 
 705 | _________________________________________________________________________________
 706 | 
 707 | # 8. Saving User Preferences
 708 | 
 709 | <!DOCTYPE html>
 710 | <html lang="en">
 711 | <head>
 712 |     <meta charset="UTF-8">
 713 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 714 |     <title>HTML5 Base Template</title>
 715 |     <style>
 716 |         #welcomeBanner {
 717 |             background-color: #2196f3;
 718 |             color: white;
 719 |             padding: 16px;
 720 |             text-align: center;
 721 |             margin-bottom: 20px;
 722 |         }
 723 |         .highlight {
 724 |             background: rgb(255, 34, 0);
 725 |             padding: 2px 6px;
 726 |             border-radius: 3px;
 727 |         }
 728 |         .event-img {
 729 |             width: 120px;
 730 |             height: 80px;
 731 |             border: 3px solid #2196f3;
 732 |             border-radius: 8px;
 733 |             margin-bottom: 6px;
 734 |             object-fit: cover;
 735 |     }
 736 |     </style>
 737 | </head>
 738 | <body>
 739 |     <!-- Welcome Banner -->
 740 |     <div id="welcomeBanner">
 741 |         Welcome, <span class="highlight">User</span>!
 742 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 743 |     </div>
 744 |     <!-- Navigation -->
 745 |     <nav>
 746 |         <ul>
 747 |             <li><a href="#home" class="highlight">Home</a></li>
 748 |             <li><a href="#events">Events</a></li>
 749 |             <li><a href="#contact">Contact</a></li>
 750 |             <li><a href="help.html" target="_blank">Help</a></li>
 751 |         </ul>
 752 |     </nav>
 753 |     <!-- Main -->
 754 |     <main>
 755 |         <section id="home">
 756 |             <h1>Welcome to the Portal</h1>
 757 |             <p class="highlight">This is the base HTML5 template.</p>
 758 |         </section>
 759 |             <section id="events">
 760 |             <h2>Events</h2>
 761 |             <p>The Image Gallery.</p>
 762 |             <table style="width:100%; margin-top:20px; text-align:center;">
 763 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 764 |                 <tr>
 765 |                     <td>
 766 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 767 |                         <div>Bug</div>
 768 |                     </td>
 769 |                     
 770 |                 </tr>
 771 |             </table>
 772 |         </section>
 773 |         <!-- ...existing code... -->
 774 | <section id="register">
 775 |     <h2>Event Registration</h2>
 776 |     <form id="eventForm" style="max-width:400px; margin:auto; background:#f5faff; padding:20px; border-radius:10px; box-shadow:0 2px 8px #2196f344;">
 777 |         <label for="name">Name:</label><br>
 778 |         <input type="text" id="name" name="name" placeholder="Your Name" required autofocus style="width:100%;padding:8px;margin-bottom:10px;"><br>
 779 | 
 780 |         <label for="email">Email:</label><br>
 781 |         <input type="email" id="email" name="email" placeholder="you@email.com" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 782 | 
 783 |         <label for="phone">Phone:</label><br>
 784 |         <input type="tel" id="phone" name="phone" placeholder="10-digit phone" required style="width:100%;padding:8px;margin-bottom:10px;" onblur="validatePhone()"><br>
 785 |         <span id="phoneError" style="color:red;font-size:0.9em;"></span>
 786 | 
 787 |         <label for="date">Event Date:</label><br>
 788 |         <input type="date" id="date" name="date" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
 789 | 
 790 |         <label for="eventType">Event Type:</label><br>
 791 |         <select id="eventType" name="eventType" required style="width:100%;padding:8px;margin-bottom:10px;" onchange="showFee();saveEventTypePreference();">
 792 |             <option value="">Select an event</option>
 793 |             <option value="festival" data-fee="Free">Spring Festival</option>
 794 |             <option value="meetup" data-fee="₹100">Tech Meetup</option>
 795 |             <option value="run" data-fee="₹200">Charity Run</option>
 796 |             <option value="workshop" data-fee="₹150">Art Workshop</option>
 797 |         </select>
 798 |         <span id="feeDisplay" style="margin-left:10px;color:#2196f3;font-weight:bold;"></span><br>
 799 | 
 800 |         <label for="message">Message:</label><br>
 801 |         <textarea id="message" name="message" placeholder="Any special requests?" rows="3" style="width:100%;padding:8px;margin-bottom:10px;" onkeyup="countChars()"></textarea>
 802 |         <span id="charCount" style="font-size:0.9em;color:#555;"></span><br>
 803 | 
 804 |         <button type="submit" id="submitBtn" style="background:#2196f3;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;" onclick="showConfirmation(event)">Register</button>
 805 |         <br><br>
 806 |         <output id="confirmation" style="color:green;font-weight:bold;"></output>
 807 |     </form>
 808 |     <button id="clearPrefsBtn" style="margin-top:10px;background:#f44336;color:white;padding:8px 16px;border:none;border-radius:5px;cursor:pointer;">Clear Preferences</button>
 809 | </section>
 810 | 
 811 | <!-- Feedback Section -->
 812 | <section id="feedback" style="max-width:400px; margin:40px auto;">
 813 |     <h2>Event Feedback</h2>
 814 |     <textarea id="feedbackText" rows="3" placeholder="Share your feedback..." style="width:100%;padding:8px;" onkeyup="countFeedbackChars()"></textarea>
 815 |     <span id="feedbackCharCount" style="font-size:0.9em;color:#555;"></span>
 816 | </section>
 817 | 
 818 | <script>
 819 | function validatePhone() {
 820 |     const phone = document.getElementById('phone').value;
 821 |     const error = document.getElementById('phoneError');
 822 |     if (!/^\d{10}$/.test(phone)) {
 823 |         error.textContent = "Please enter a valid 10-digit phone number.";
 824 |     } else {
 825 |         error.textContent = "";
 826 |     }
 827 | }
 828 | 
 829 | function showFee() {
 830 |     const select = document.getElementById('eventType');
 831 |     const feeDisplay = document.getElementById('feeDisplay');
 832 |     const selected = select.options[select.selectedIndex];
 833 |     const fee = selected.getAttribute('data-fee');
 834 |     feeDisplay.textContent = fee ? `Fee: ${fee}` : '';
 835 | }
 836 | 
 837 | function showConfirmation(e) {
 838 |     e.preventDefault();
 839 |     document.getElementById('confirmation').value = "Thank you for registering!";
 840 | }
 841 | 
 842 | function countChars() {
 843 |     const msg = document.getElementById('message').value;
 844 |     document.getElementById('charCount').textContent = `${msg.length} characters`;
 845 | }
 846 | 
 847 | function countFeedbackChars() {
 848 |     const msg = document.getElementById('feedbackText').value;
 849 |     document.getElementById('feedbackCharCount').textContent = `${msg.length} characters`;
 850 | }
 851 | 
 852 | // Enlarge image on double-click
 853 | document.addEventListener('DOMContentLoaded', function() {
 854 |     document.querySelectorAll('.event-img').forEach(function(img) {
 855 |         img.ondblclick = function() {
 856 |             if (!img.classList.contains('enlarged')) {
 857 |                 img.style.transform = "scale(2)";
 858 |                 img.style.zIndex = 10;
 859 |                 img.style.transition = "transform 0.3s";
 860 |                 img.classList.add('enlarged');
 861 |             } else {
 862 |                 img.style.transform = "scale(1)";
 863 |                 img.classList.remove('enlarged');
 864 |             }
 865 |         };
 866 |     });
 867 | });
 868 | </script>
 869 | <script>
 870 | // ...existing functions...
 871 | 
 872 | // Save selected event type to localStorage
 873 | function saveEventTypePreference() {
 874 |     const eventType = document.getElementById('eventType').value;
 875 |     localStorage.setItem('preferredEventType', eventType);
 876 | }
 877 | 
 878 | // On page load, pre-select preferred event type if available
 879 | window.addEventListener('DOMContentLoaded', function() {
 880 |     // ...existing code...
 881 |     const preferred = localStorage.getItem('preferredEventType');
 882 |     if (preferred) {
 883 |         document.getElementById('eventType').value = preferred;
 884 |         showFee();
 885 |     }
 886 | });
 887 | 
 888 | // Clear preferences button
 889 | document.getElementById('clearPrefsBtn').addEventListener('click', function() {
 890 |     localStorage.clear();
 891 |     sessionStorage.clear();
 892 |     document.getElementById('eventType').value = "";
 893 |     document.getElementById('feeDisplay').textContent = "";
 894 |     alert('Preferences cleared!');
 895 | });
 896 | </script>
 897 | <!-- ...existing code... -->
 898 |  <!-- Video Invite Section -->
 899 | <section id="video-invite" style="max-width:500px; margin:40px auto;">
 900 |     <h2>Event Promo Video</h2>
 901 |     <video id="promoVideo" width="100%" controls oncanplay="videoReadyMessage()">
 902 |         <source src="videos/event-promo.mp4" type="video/mp4">
 903 |         Your browser does not support the video tag.
 904 |     </video>
 905 |     <div id="videoStatus" style="color:green; font-weight:bold; margin-top:10px;"></div>
 906 | </section>
 907 | 
 908 | <script>
 909 | function videoReadyMessage() {
 910 |     document.getElementById('videoStatus').textContent = "Video ready to play!";
 911 | }
 912 | 
 913 | // Warn user if they try to leave with unfinished form
 914 | let formStarted = false;
 915 | document.getElementById('eventForm').addEventListener('input', function() {
 916 |     formStarted = true;
 917 | });
 918 | window.onbeforeunload = function(e) {
 919 |     if (formStarted && !document.getElementById('confirmation').value) {
 920 |         return "You have unsaved changes. Are you sure you want to leave?";
 921 |     }
 922 | };
 923 | </script>
 924 |     <!-- Footer -->
 925 |     <footer>
 926 |         <p>&copy; 2025 CopyRights at NK</p>
 927 |     </footer>
 928 | </body>
 929 | </html>
 930 | 
 931 | 
 932 | _________________________________________________________________________________
 933 | 
 934 | # 9. Geolocation for Event Mapping
 935 | 
 936 | <!DOCTYPE html>
 937 | <html lang="en">
 938 | <head>
 939 |     <meta charset="UTF-8">
 940 |     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 941 |     <title>HTML5 Base Template</title>
 942 |     <style>
 943 |         #welcomeBanner {
 944 |             background-color: #2196f3;
 945 |             color: white;
 946 |             padding: 16px;
 947 |             text-align: center;
 948 |             margin-bottom: 20px;
 949 |         }
 950 |         .highlight {
 951 |             background: rgb(255, 34, 0);
 952 |             padding: 2px 6px;
 953 |             border-radius: 3px;
 954 |         }
 955 |         .event-img {
 956 |             width: 120px;
 957 |             height: 80px;
 958 |             border: 3px solid #2196f3;
 959 |             border-radius: 8px;
 960 |             margin-bottom: 6px;
 961 |             object-fit: cover;
 962 |     }
 963 |     </style>
 964 | </head>
 965 | <body>
 966 |     <!-- Welcome Banner -->
 967 |     <div id="welcomeBanner">
 968 |         Welcome, <span class="highlight">User</span>!
 969 |         <span style="color: red; font-weight: bold;">Special Offer: 20% off today!</span>
 970 |     </div>
 971 |     <!-- Navigation -->
 972 |     <nav>
 973 |         <ul>
 974 |             <li><a href="#home" class="highlight">Home</a></li>
 975 |             <li><a href="#events">Events</a></li>
 976 |             <li><a href="#contact">Contact</a></li>
 977 |             <li><a href="help.html" target="_blank">Help</a></li>
 978 |         </ul>
 979 |     </nav>
 980 |     <!-- Main -->
 981 |     <main>
 982 |         <section id="home">
 983 |             <h1>Welcome to the Portal</h1>
 984 |             <p class="highlight">This is the base HTML5 template.</p>
 985 |         </section>
 986 |             <section id="events">
 987 |             <h2>Events</h2>
 988 |             <p>The Image Gallery.</p>
 989 |             <table style="width:100%; margin-top:20px; text-align:center;">
 990 |                 <caption style="caption-side:top; font-weight:bold; padding:0px;">Gallery: Highlights Events</caption>
 991 |                 <tr>
 992 |                     <td>
 993 |                         <img src="images/Bug.png" alt="The Bug Image" title="The Bug" class="event-img">
 994 |                         <div>Bug</div>
 995 |                     </td>
 996 |                     
 997 |                 </tr>
 998 |             </table>
 999 |         </section>
1000 |         <!-- ...existing code... -->
1001 | <section id="register">
1002 |     <h2>Event Registration</h2>
1003 |     <form id="eventForm" style="max-width:400px; margin:auto; background:#f5faff; padding:20px; border-radius:10px; box-shadow:0 2px 8px #2196f344;">
1004 |         <label for="name">Name:</label><br>
1005 |         <input type="text" id="name" name="name" placeholder="Your Name" required autofocus style="width:100%;padding:8px;margin-bottom:10px;"><br>
1006 | 
1007 |         <label for="email">Email:</label><br>
1008 |         <input type="email" id="email" name="email" placeholder="you@email.com" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
1009 | 
1010 |         <label for="phone">Phone:</label><br>
1011 |         <input type="tel" id="phone" name="phone" placeholder="10-digit phone" required style="width:100%;padding:8px;margin-bottom:10px;" onblur="validatePhone()"><br>
1012 |         <span id="phoneError" style="color:red;font-size:0.9em;"></span>
1013 | 
1014 |         <label for="date">Event Date:</label><br>
1015 |         <input type="date" id="date" name="date" required style="width:100%;padding:8px;margin-bottom:10px;"><br>
1016 | 
1017 |         <label for="eventType">Event Type:</label><br>
1018 |         <select id="eventType" name="eventType" required style="width:100%;padding:8px;margin-bottom:10px;" onchange="showFee();saveEventTypePreference();">
1019 |             <option value="">Select an event</option>
1020 |             <option value="festival" data-fee="Free">Spring Festival</option>
1021 |             <option value="meetup" data-fee="₹100">Tech Meetup</option>
1022 |             <option value="run" data-fee="₹200">Charity Run</option>
1023 |             <option value="workshop" data-fee="₹150">Art Workshop</option>
1024 |         </select>
1025 |         <span id="feeDisplay" style="margin-left:10px;color:#2196f3;font-weight:bold;"></span><br>
1026 | 
1027 |         <label for="message">Message:</label><br>
1028 |         <textarea id="message" name="message" placeholder="Any special requests?" rows="3" style="width:100%;padding:8px;margin-bottom:10px;" onkeyup="countChars()"></textarea>
1029 |         <span id="charCount" style="font-size:0.9em;color:#555;"></span><br>
1030 | 
1031 |         <button type="submit" id="submitBtn" style="background:#2196f3;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;" onclick="showConfirmation(event)">Register</button>
1032 |         <br><br>
1033 |         <output id="confirmation" style="color:green;font-weight:bold;"></output>
1034 |     </form>
1035 |     <button id="clearPrefsBtn" style="margin-top:10px;background:#f44336;color:white;padding:8px 16px;border:none;border-radius:5px;cursor:pointer;">Clear Preferences</button>
1036 | </section>
1037 | 
1038 | <!-- Feedback Section -->
1039 | <section id="feedback" style="max-width:400px; margin:40px auto;">
1040 |     <h2>Event Feedback</h2>
1041 |     <textarea id="feedbackText" rows="3" placeholder="Share your feedback..." style="width:100%;padding:8px;" onkeyup="countFeedbackChars()"></textarea>
1042 |     <span id="feedbackCharCount" style="font-size:0.9em;color:#555;"></span>
1043 | </section>
1044 | 
1045 | <script>
1046 | function validatePhone() {
1047 |     const phone = document.getElementById('phone').value;
1048 |     const error = document.getElementById('phoneError');
1049 |     if (!/^\d{10}$/.test(phone)) {
1050 |         error.textContent = "Please enter a valid 10-digit phone number.";
1051 |     } else {
1052 |         error.textContent = "";
1053 |     }
1054 | }
1055 | 
1056 | function showFee() {
1057 |     const select = document.getElementById('eventType');
1058 |     const feeDisplay = document.getElementById('feeDisplay');
1059 |     const selected = select.options[select.selectedIndex];
1060 |     const fee = selected.getAttribute('data-fee');
1061 |     feeDisplay.textContent = fee ? `Fee: ${fee}` : '';
1062 | }
1063 | 
1064 | function showConfirmation(e) {
1065 |     e.preventDefault();
1066 |     document.getElementById('confirmation').value = "Thank you for registering!";
1067 | }
1068 | 
1069 | function countChars() {
1070 |     const msg = document.getElementById('message').value;
1071 |     document.getElementById('charCount').textContent = `${msg.length} characters`;
1072 | }
1073 | 
1074 | function countFeedbackChars() {
1075 |     const msg = document.getElementById('feedbackText').value;
1076 |     document.getElementById('feedbackCharCount').textContent = `${msg.length} characters`;
1077 | }
1078 | 
1079 | // Enlarge image on double-click
1080 | document.addEventListener('DOMContentLoaded', function() {
1081 |     document.querySelectorAll('.event-img').forEach(function(img) {
1082 |         img.ondblclick = function() {
1083 |             if (!img.classList.contains('enlarged')) {
1084 |                 img.style.transform = "scale(2)";
1085 |                 img.style.zIndex = 10;
1086 |                 img.style.transition = "transform 0.3s";
1087 |                 img.classList.add('enlarged');
1088 |             } else {
1089 |                 img.style.transform = "scale(1)";
1090 |                 img.classList.remove('enlarged');
1091 |             }
1092 |         };
1093 |     });
1094 | });
1095 | </script>
1096 | <script>
1097 | // ...existing functions...
1098 | 
1099 | // Save selected event type to localStorage
1100 | function saveEventTypePreference() {
1101 |     const eventType = document.getElementById('eventType').value;
1102 |     localStorage.setItem('preferredEventType', eventType);
1103 | }
1104 | 
1105 | // On page load, pre-select preferred event type if available
1106 | window.addEventListener('DOMContentLoaded', function() {
1107 |     // ...existing code...
1108 |     const preferred = localStorage.getItem('preferredEventType');
1109 |     if (preferred) {
1110 |         document.getElementById('eventType').value = preferred;
1111 |         showFee();
1112 |     }
1113 | });
1114 | 
1115 | // Clear preferences button
1116 | document.getElementById('clearPrefsBtn').addEventListener('click', function() {
1117 |     localStorage.clear();
1118 |     sessionStorage.clear();
1119 |     document.getElementById('eventType').value = "";
1120 |     document.getElementById('feeDisplay').textContent = "";
1121 |     alert('Preferences cleared!');
1122 | });
1123 | </script>
1124 | <!-- ...existing code... -->
1125 |  <!-- Video Invite Section -->
1126 | <section id="video-invite" style="max-width:500px; margin:40px auto;">
1127 |     <h2>Event Promo Video</h2>
1128 |     <video id="promoVideo" width="100%" controls oncanplay="videoReadyMessage()">
1129 |         <source src="videos/event-promo.mp4" type="video/mp4">
1130 |         Your browser does not support the video tag.
1131 |     </video>
1132 |     <div id="videoStatus" style="color:green; font-weight:bold; margin-top:10px;"></div>
1133 | </section>
1134 | 
1135 | <script>
1136 | function videoReadyMessage() {
1137 |     document.getElementById('videoStatus').textContent = "Video ready to play!";
1138 | }
1139 | 
1140 | // Warn user if they try to leave with unfinished form
1141 | let formStarted = false;
1142 | document.getElementById('eventForm').addEventListener('input', function() {
1143 |     formStarted = true;
1144 | });
1145 | window.onbeforeunload = function(e) {
1146 |     if (formStarted && !document.getElementById('confirmation').value) {
1147 |         return "You have unsaved changes. Are you sure you want to leave?";
1148 |     }
1149 | };
1150 | </script>
1151 | 
1152 | <!-- ...existing code... -->
1153 | 
1154 | <!-- Geolocation Section -->
1155 | <section id="geolocation" style="max-width:400px; margin:40px auto;">
1156 |     <h2>Find Nearby Events</h2>
1157 |     <button id="findEventsBtn" style="background:#4caf50;color:white;padding:10px 20px;border:none;border-radius:5px;cursor:pointer;">Find Nearby Events</button>
1158 |     <div id="geoResult" style="margin-top:15px; color:#333; font-weight:bold;"></div>
1159 | </section>
1160 | 
1161 | <script>
1162 | document.getElementById('findEventsBtn').addEventListener('click', function() {
1163 |     const geoResult = document.getElementById('geoResult');
1164 |     geoResult.textContent = "Locating...";
1165 |     if (!navigator.geolocation) {
1166 |         geoResult.textContent = "Geolocation is not supported by your browser.";
1167 |         return;
1168 |     }
1169 |     navigator.geolocation.getCurrentPosition(
1170 |         function(position) {
1171 |             geoResult.textContent = `Your coordinates: Latitude ${position.coords.latitude.toFixed(5)}, Longitude ${position.coords.longitude.toFixed(5)}`;
1172 |         },
1173 |         function(error) {
1174 |             switch(error.code) {
1175 |                 case error.PERMISSION_DENIED:
1176 |                     geoResult.textContent = "Permission denied. Unable to access your location.";
1177 |                     break;
1178 |                 case error.POSITION_UNAVAILABLE:
1179 |                     geoResult.textContent = "Location information is unavailable.";
1180 |                     break;
1181 |                 case error.TIMEOUT:
1182 |                     geoResult.textContent = "Location request timed out. Please try again.";
1183 |                     break;
1184 |                 default:
1185 |                     geoResult.textContent = "An unknown error occurred.";
1186 |             }
1187 |         },
1188 |         {
1189 |             enableHighAccuracy: true,
1190 |             timeout: 10000,
1191 |             maximumAge: 0
1192 |         }
1193 |     );
1194 | });
1195 | </script>
1196 | <!-- ...existing code... -->
1197 |     <!-- Footer -->
1198 |     <footer>
1199 |         <p>&copy; 2025 CopyRights at NK</p>
1200 |     </footer>
1201 | </body>
1202 | </html>
1203 | 
1204 | 
1205 | ________________________________________________________________________________
1206 | 
1207 | # 10. Debugging with Chrome DevTools 
1208 | 


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