├── .gitignore
├── LICENSE.md
├── README.md
├── countdown.gif
├── package-lock.json
├── package.json
├── public
    ├── favicon.ico
    └── index.html
└── src
    ├── App.js
    ├── Countdown.js
    ├── github.png
    ├── index.css
    ├── index.js
    └── logo.svg


/.gitignore:
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 1 | # See http://help.github.com/ignore-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | node_modules
 5 | 
 6 | # testing
 7 | coverage
 8 | 
 9 | # production
10 | build
11 | 
12 | # misc
13 | .DS_Store
14 | .env
15 | npm-debug.log
16 | 


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/LICENSE.md:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2022 Kristin Baumann
 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 | 


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/README.md:
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 1 | # React Countdown
 2 | 
 3 | React Component demonstrating a count down to a certain date.
 4 | 
 5 | This project was bootstrapped with [Create React App](https://github.com/facebookincubator/create-react-app) to test its functionality in erasing the setup effort for small React experiments.
 6 | 
 7 | Live: [https://countdown2christmas.kristin-baumann.com/](https://countdown2christmas.kristin-baumann.com/)
 8 | 
 9 | <img src="/countdown.gif" width="600">
10 | 
11 | # Scripts
12 | 
13 | ### `npm start`
14 | 
15 | Runs the app in the development mode. Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
16 | 
17 | ### `npm run build`
18 | 
19 | Builds the app for production to the `build` folder.<br>
20 | 
21 | ## License
22 | 
23 | See the [LICENSE](LICENSE.md) file for license rights and limitations (MIT).
24 | 


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/countdown.gif:
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https://raw.githubusercontent.com/kristinbaumann/react-countdown/06c2006cd554cc926e7406cb921dd82b36ed3dce/countdown.gif


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/package.json:
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 1 | {
 2 |   "name": "react-countdown",
 3 |   "version": "1.0.0",
 4 |   "description": "React Countdown Component",
 5 |   "author": "Kristin Baumann (https://www.kristin-baumann.com)",
 6 |   "repository": "https://github.com/kristinbaumann/react-countdown",
 7 |   "devDependencies": {
 8 |     "react-scripts": "5.0.0"
 9 |   },
10 |   "dependencies": {
11 |     "react": "17.0.0",
12 |     "react-dom": "17.0.0"
13 |   },
14 |   "scripts": {
15 |     "start": "react-scripts start",
16 |     "build": "react-scripts build",
17 |     "test": "react-scripts test --env=jsdom",
18 |     "eject": "react-scripts eject"
19 |   },
20 |   "browserslist": {
21 |     "production": [
22 |       ">0.2%",
23 |       "not dead",
24 |       "not op_mini all"
25 |     ],
26 |     "development": [
27 |       "last 1 chrome version",
28 |       "last 1 firefox version",
29 |       "last 1 safari version"
30 |     ]
31 |   }
32 | }
33 | 


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/public/favicon.ico:
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https://raw.githubusercontent.com/kristinbaumann/react-countdown/06c2006cd554cc926e7406cb921dd82b36ed3dce/public/favicon.ico


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/public/index.html:
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 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" />
 6 |     <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico" />
 7 |     <title>React Countdown Component</title>
 8 |   </head>
 9 |   <body>
10 |     <div id="root"></div>
11 |   </body>
12 | </html>
13 | 


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/src/App.js:
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 1 | import React, { Component } from "react";
 2 | import Countdown from "./Countdown.js";
 3 | import logo from "./logo.svg";
 4 | import github from "./github.png";
 5 | 
 6 | class App extends Component {
 7 |   render() {
 8 |     const currentDate = new Date();
 9 |     const year =
10 |       currentDate.getMonth() === 11 && currentDate.getDate() > 23
11 |         ? currentDate.getFullYear() + 1
12 |         : currentDate.getFullYear();
13 |     return (
14 |       <div className="App">
15 |         <div className="App-header">
16 |           <img src={logo} className="App-logo" alt="logo" />
17 |           <h2>React Countdown</h2>
18 | 
19 |           <a
20 |             href="https://github.com/kristinbaumann/react-countdown"
21 |             target="_blank"
22 |             rel="noopener noreferrer"
23 |           >
24 |             <img src={github} alt="github" className="githubIcon" />
25 |             <span>View on Github</span>
26 |           </a>
27 |         </div>
28 | 
29 |         <h3 className="title">
30 |           Christmas Eve is coming soon (Midnight of 23rd to 24th Dec, UTC time):
31 |         </h3>
32 |         <Countdown date={`${year}-12-24T00:00:00`} />
33 |       </div>
34 |     );
35 |   }
36 | }
37 | 
38 | export default App;
39 | 


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/src/Countdown.js:
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  1 | import React, { Component } from "react";
  2 | import PropTypes from "prop-types";
  3 | 
  4 | class Countdown extends Component {
  5 |   constructor(props) {
  6 |     super(props);
  7 | 
  8 |     this.state = {
  9 |       days: 0,
 10 |       hours: 0,
 11 |       min: 0,
 12 |       sec: 0,
 13 |     };
 14 |   }
 15 | 
 16 |   componentDidMount() {
 17 |     // update every second
 18 |     this.interval = setInterval(() => {
 19 |       const date = this.calculateCountdown(this.props.date);
 20 |       date ? this.setState(date) : this.stop();
 21 |     }, 1000);
 22 |   }
 23 | 
 24 |   componentWillUnmount() {
 25 |     this.stop();
 26 |   }
 27 | 
 28 |   calculateCountdown(endDate) {
 29 |     let diff = (Date.parse(new Date(endDate)) - Date.parse(new Date())) / 1000;
 30 | 
 31 |     // clear countdown when date is reached
 32 |     if (diff <= 0) return false;
 33 | 
 34 |     const timeLeft = {
 35 |       years: 0,
 36 |       days: 0,
 37 |       hours: 0,
 38 |       min: 0,
 39 |       sec: 0,
 40 |     };
 41 | 
 42 |     // calculate time difference between now and expected date
 43 |     if (diff >= 365.25 * 86400) {
 44 |       // 365.25 * 24 * 60 * 60
 45 |       timeLeft.years = Math.floor(diff / (365.25 * 86400));
 46 |       diff -= timeLeft.years * 365.25 * 86400;
 47 |     }
 48 |     if (diff >= 86400) {
 49 |       // 24 * 60 * 60
 50 |       timeLeft.days = Math.floor(diff / 86400);
 51 |       diff -= timeLeft.days * 86400;
 52 |     }
 53 |     if (diff >= 3600) {
 54 |       // 60 * 60
 55 |       timeLeft.hours = Math.floor(diff / 3600);
 56 |       diff -= timeLeft.hours * 3600;
 57 |     }
 58 |     if (diff >= 60) {
 59 |       timeLeft.min = Math.floor(diff / 60);
 60 |       diff -= timeLeft.min * 60;
 61 |     }
 62 |     timeLeft.sec = diff;
 63 | 
 64 |     return timeLeft;
 65 |   }
 66 | 
 67 |   stop() {
 68 |     clearInterval(this.interval);
 69 |   }
 70 | 
 71 |   addLeadingZeros(value) {
 72 |     value = String(value);
 73 |     while (value.length < 2) {
 74 |       value = "0" + value;
 75 |     }
 76 |     return value;
 77 |   }
 78 | 
 79 |   render() {
 80 |     const countDown = this.state;
 81 | 
 82 |     return (
 83 |       <div className="Countdown">
 84 |         <span className="Countdown-col">
 85 |           <span className="Countdown-col-element">
 86 |             <strong>{this.addLeadingZeros(countDown.days)}</strong>
 87 |             <span>{countDown.days === 1 ? "Day" : "Days"}</span>
 88 |           </span>
 89 |         </span>
 90 | 
 91 |         <span className="Countdown-col">
 92 |           <span className="Countdown-col-element">
 93 |             <strong>{this.addLeadingZeros(countDown.hours)}</strong>
 94 |             <span>Hours</span>
 95 |           </span>
 96 |         </span>
 97 | 
 98 |         <span className="Countdown-col">
 99 |           <span className="Countdown-col-element">
100 |             <strong>{this.addLeadingZeros(countDown.min)}</strong>
101 |             <span>Min</span>
102 |           </span>
103 |         </span>
104 | 
105 |         <span className="Countdown-col">
106 |           <span className="Countdown-col-element">
107 |             <strong>{this.addLeadingZeros(countDown.sec)}</strong>
108 |             <span>Sec</span>
109 |           </span>
110 |         </span>
111 |       </div>
112 |     );
113 |   }
114 | }
115 | 
116 | Countdown.propTypes = {
117 |   date: PropTypes.string.isRequired,
118 | };
119 | 
120 | Countdown.defaultProps = {
121 |   date: new Date(),
122 | };
123 | 
124 | export default Countdown;
125 | 


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/src/github.png:
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https://raw.githubusercontent.com/kristinbaumann/react-countdown/06c2006cd554cc926e7406cb921dd82b36ed3dce/src/github.png


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/src/index.css:
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 1 | body {
 2 |   margin: 0;
 3 |   padding: 0;
 4 |   font-family: sans-serif;
 5 |   text-align: center;
 6 | }
 7 | 
 8 | .App-logo {
 9 |   height: 80px;
10 | }
11 | 
12 | .App-header {
13 |   background-color: #222;
14 |   padding: 20px;
15 |   color: white;
16 | }
17 | 
18 | .App-header .title{
19 |   margin-top: 40px;
20 | }
21 | 
22 | .App-header a{
23 |   display: flex;
24 |   justify-content: center;
25 |   align-items: center;
26 |   color: white;
27 |   transition: .2s all;
28 | }
29 | .App-header a:hover{
30 |   opacity: .7;
31 | }
32 | 
33 | .githubIcon{
34 |   height: 30px;
35 |   margin-right: 5px;
36 | }
37 | 
38 | .Countdown{
39 |   margin: 10px auto;
40 |   padding-bottom: 20px;
41 | }
42 | 
43 | .Countdown-col{
44 |   display: inline-block;
45 | }
46 | 
47 | .Countdown-col-element{
48 |   display: inline-block;
49 |   margin: 0 20px;
50 |   display: flex;
51 |   flex-direction: column;
52 | }
53 | 
54 | .Countdown-col-element strong{
55 |   font-size: 50px;
56 | }
57 | 


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/src/index.js:
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1 | import React from 'react';
2 | import ReactDOM from 'react-dom';
3 | import App from './App';
4 | import './index.css';
5 | 
6 | ReactDOM.render(<App />, document.getElementById('root'));
7 | 


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/src/logo.svg:
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1 | <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
2 |     <g fill="#61DAFB">
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4 |         <circle cx="420.9" cy="296.5" r="45.7"/>
5 |         <path d="M520.5 78.1z"/>
6 |     </g>
7 | </svg>
8 | 


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