├── index.html ├── script.js └── style.css /index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | Document 8 | 9 | 10 | 11 | 12 | 13 |

Day :- 1

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Q1 : Create one function with zero parameter having a console statement;

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ANS :-

19 | 
 20 |                 function question(){
 21 |                     console.log("This is Zero peremeter Function")
 22 |                 }
 23 |                 question();
 24 |
25 |

Output :- This is Zero peremeter Function

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Q2 : Create one function which takes two values as a parameter and print the sum of them as "Sum of 3, 4 is 7"

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ANS :-

31 | 
 32 |                 function question2(a,b){
 33 |                     let sum = a+b;
 34 |                     console.log(sum)
 35 |                 }
 36 |                 question2(3,4)
 37 |
38 |

Output :- 7

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Q3 : Create one arrow function

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ANS :-

44 | 
 45 |                 const arrow=()=>{
 46 |                     console.log("This is arrow function ");
 47 |                 }
 48 |                 arrow();
 49 |
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Output :- This is arrow function

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Q4 : print Output

55 | 
 56 |                 var x = 21;
 57 |                 var girl = function () {
 58 |                     console.log(x);
 59 |                     var x = 20;
 60 |                 };
 61 |                 girl ();
 62 |
63 |

Output :- undefined

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NOTE :- 65 |

within the function scope x gets hoisted and since it is of var type, we get the output as undefined

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Q5 : print Output

71 | 
 72 |                 var x = 21;
 73 |                 girl ();
 74 |                 console.log(x)
 75 |                 function girl() {
 76 |                     console.log(x);
 77 |                     var x = 20;
 78 |                 };
 79 |
80 |

Output :-

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undefined 82 |
83 | 21 84 |

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NOTE :- 86 |

Due to hoisting of the variable within the function scope, first we get the output as undefined. x has been initialized as 21 already and that is printed when console.log(x) is executed

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Q6 : Print Output

92 | 
 93 |                 var x = 21;
 94 |                 a();
 95 |                 b();
 96 |                 function a() {
 97 |     
 98 |                     x = 20;
 99 |                    console.log(x);
100 |                  };
101 |                   function b() {
102 |                      
103 |                      x = 40;
104 |                     console.log(x);
105 |                  };
106 |
107 |

Output :-

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20
40

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NOTE :- 110 |

value of x is initialized as 20 within the function scope of a() and output is 20. value of x is initialized as 40 within the function scope of b(), so the output is 40.

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Q7 : Write a function that accepts parameter n and returns factorial of n

116 | 
117 |                 const fact=(num)=>{
118 |                     ans=1
119 |                     if(num>0){
120 |                         for (let i=1; i<=num;i++){
121 |                             ans=ans*i
122 |                         }
123 |                         console.log(ans)
124 |                     }
125 |                     else{
126 |                         console.log("enter a postive no")
127 |                     }
128 |                 }
129 |                 
130 |                 fact(5)
131 |
132 |

Output :- 120

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136 | 137 | 138 |

Day :- 2

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Q1 : Guess The Output

143 | 
144 |                 function FindSum(a, b){
145 |                     return a + b;
146 |                 }
147 |                 
148 |                 function DisplayData(data, batch){
149 |                     console.log(`i am from ${data} and My batch is EA${batch}`)
150 |                 }
151 |                 
152 |                 DisplayData("PrepBytes", FindSum(10, 13));
153 |
154 |

Output :- i am from PrepBytes and My batch is EA23

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NOTE :- 156 |

The 1st parameter "data" gets the value of the string "Prepbytes" from the 1st argument. Function FindSum is the 2nd argument and it gets executed, value 19 is returned and it goes to "batch" the 2nd parameter.

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Q2 : Guess the Output

162 | 
163 |                 Abc();
164 |                 const Abc = function(){
165 |                     let value = 20;
166 |                     console.log(value);
167 |                 }
168 |
169 |

Output :- ReferenceError

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NOTE :- 171 |

We get this error because Abc has not been initialized before

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Q3 : Guess the output

177 | 
178 |                 var a = 10;
179 |                 (function (){
180 |                     console.log(a);
181 |                     var a = 20;
182 |                 })();
183 |
184 |

Output :- undefined

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NOTE :- 186 |

Before declaration in memory allocation the a value wants to be printed.

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Q4 : Guess the Output

192 | 
193 |                 const greet =  function(name){
194 |                     return function(m){
195 |                         console.log(`Hi!! ${name}, ${m}`);
196 |                     }
197 |                 }
198 |                 const greet_message = greet('EAC-01');
199 |                 greet_message("Welcome To PrepBytes")
200 |
201 |

Output :- Hi!! EAC-01, Welcome To PrepBytes

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NOTE :- 203 |

it will directly to come const greet_message, in this the greet is assigned with argument EA19, which will make connection to greet variable in const, and name will be printed as EA19. Same goes to function of m.

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207 | 208 | 209 | -------------------------------------------------------------------------------- /script.js: -------------------------------------------------------------------------------- 1 | // Question :1 2 | function question() { 3 | console.log("This is Zero peremeter Function"); 4 | } 5 | question(); 6 | 7 | // Question :2 8 | function question2(a, b) { 9 | let sum = a + b; 10 | console.log(sum); 11 | } 12 | question2(3, 4); 13 | 14 | // Question :3 15 | 16 | const arrow = () => { 17 | console.log("This is arrow function "); 18 | }; 19 | arrow(); 20 | 21 | // question :4 22 | // Print output: 23 | var x = 21; 24 | var girl = function () { 25 | console.log(x); 26 | var x = 20; 27 | }; 28 | girl(); 29 | 30 | // Question :5 31 | var x = 21; 32 | girl(); 33 | console.log(x); 34 | function girl() { 35 | console.log(x); 36 | var x = 20; 37 | } 38 | 39 | // Question :6 40 | var x = 21; 41 | a(); 42 | b(); 43 | 44 | function a() { 45 | x = 20; 46 | console.log(x); 47 | } 48 | function b() { 49 | x = 40; 50 | console.log(x); 51 | } 52 | 53 | //question :7 54 | const fact = (num) => { 55 | ans = 1; 56 | if (num > 0) { 57 | for (let i = 1; i <= num; i++) { 58 | ans = ans * i; 59 | } 60 | console.log(ans); 61 | } else { 62 | console.log("enter a postive no"); 63 | } 64 | }; 65 | 66 | fact(5); 67 | 68 | /* ============================================= Day :- 2 ======================================================== */ 69 | 70 | // question: 1 71 | function FindSum(a, b) { 72 | return a + b; 73 | } 74 | 75 | function DisplayData(data, batch) { 76 | console.log(`i am from ${data} and My batch is EA${batch}`); 77 | } 78 | 79 | DisplayData("PrepBytes", FindSum(10, 13)); 80 | 81 | // Question :2 82 | Abc(); 83 | const Abc = function () { 84 | let value = 20; 85 | console.log(value); 86 | }; 87 | 88 | // Question :3 89 | var a = 10; 90 | (function (){ 91 | console.log(a); 92 | var a = 20; 93 | })(); 94 | 95 | // Question :4 96 | const greet = function(name){ 97 | return function(m){ 98 | console.log(`Hi!! ${name}, ${m}`); 99 | } 100 | } 101 | const greet_message = greet('EAC-01'); 102 | greet_message("Welcome To PrepBytes") 103 | -------------------------------------------------------------------------------- /style.css: -------------------------------------------------------------------------------- 1 | *{ 2 | margin: 0; 3 | padding: 0; 4 | box-sizing: border-box; 5 | } 6 | .Heading{ 7 | margin-top: 20px; 8 | font-size: 35px; 9 | text-align: center; 10 | font-weight: 800; 11 | color: blueviolet; 12 | } 13 | hr{ 14 | background-color: grey; 15 | height: 4px; 16 | width: 100%; 17 | margin-top: 40px; 18 | } 19 | .mainContanier{ 20 | margin-left: 50px; 21 | margin-right: 50px; 22 | } 23 | .bold{ 24 | font-weight: 700; 25 | margin: 20px 0; 26 | font-size: 20px; 27 | 28 | } 29 | .ansBold{ 30 | font-weight: 600; 31 | color: blue; 32 | } 33 | .code{ 34 | color: red; 35 | } 36 | .green{ 37 | color: green; 38 | font-weight: 600; 39 | font-size: 18px; 40 | } --------------------------------------------------------------------------------