利用JavaScript實現春節倒計時效果(移動端和PC端)
阿新 • • 發佈:2022-01-17
目錄
- 效果預覽
- html部分
- 移動端樣式(mobile.)
- pc端樣式(style.css)
- 部分
- 效果演示
- 移動端
- pc端
效果預覽
html部分
<!DOCTYPE html> <!--geyao--> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <link rel="stylesheet" href="css/style.css" rel="external nofollow" > <link rel="stylesheet" href="css/mobile.css" rel="external nofollow" > <title>春節倒計時</title> </head> <body> <div class="container"> <h2><span id="title">春節倒計時</span>2022</h2> <div class="countdown"> <div id="day">--</div> <div id="hour">--</div> <div id="minute">--</div> <div id="second">--</div> </div> <!-- 手動切換不好看 直接加定時器切換 微信公眾號關注前端小歌謠 --> <!-- <div id="btn">切換背景</div> --> </div> <script src="js/script.js"></script> </body> </html>
移動端樣式(mobile.css)
@media screen and (max-width: 1025px) { * { margin: 0; padding: 0; } body { background: rgb(129,155,190) url(../image/geyao1.jpg); background-size: cover; background-position: center center; height: 100%; } .container { margin: 0; color: #fff; line-height: normal; position: absolute; align-items: center; left: 5%; right: 5%; } .container h2 { font-size: 6em; text-align: center; margin: 10% 0; color: #fff; } .container h2 span { color: #fff; display: block; text-align: center; font-size: 0.3em; font-weight: 300; letter-spacing: 2px; } .countdown { display: flex; justify-content: space-around; margin: 0; } .countdown div { http://www.cppcns.comwidth: 20%; height: 13vw; margin: 0 10px; line-height: 13vw; font-size: 2em; position: relative; text-align: center; background: #333333; color: #ffffff; font-weight: 500; border-radius: 10px 10px 0 0; } .countdown div:before { content: ''; position: absolute; bottom: -30px; left: 0; width: 100%; height: 30px; background: #b00000; color: #ffffff; font-size: 0.4em; line-height: 35px; font-weight: 300; border-radius: 0 0 10px 10px; } .countdown #day:before { content: '天'; } .countdown #hour:before { content: '時'; } .countdown #minute:before { content: '分'; } .countdown #second:before { content: '秒'; } }
pc端樣式(style.css)
* { margin: 0; padding: 0; font-family: 'Poppins',sans-serif; } @media screen and (min-width: 1025px) { body { background: rgb(129,190) url(../image/geyao1.jpg); background-attachment: fixed; background-size: cover; -webkit-background-size: cover; -o-background-size: cover; } .container { position: absolute; top: 80px; left: 100px; right: 100px; bottom: 80px; background-size: cover; -webkit-background-size: cover; -o-background-size: cover; display: flex; justify-content: center; align-items: center; flex-direction: column; box-shadow: 0 50px 50px rgba(0,0.8),0 0 0 100px rgba(0,0.3); } .container h2 { text-align: center; font-size: 10em; line-height: 0.7em; color: #ffffff; margin-top: -80px; } .container h2 span { display: block; font-weight: 300; letter-spacing: 6px; font-size: 0.2em; } .countdown { display: flex; margin-top: 50px; } .countdown div { position: relative; width: 100px; height: 100px; line-height: 100px; text-align: center; background: #333; color: #fff; margin: 0 15px; font-size: 3em; font-weight: 500; border-radius: 10px 10px 0 0; } .countdown div:before { content: ''; position: absolute; bottom: -30px; left: 0; width: 100%; height: 35px; background: #b00000; color: #ffffff; font-size: 0.35em; line-height: 35px; font-weight: 300; border-radius: 0 0 10px 10px; } .countdown #day:before { content: '天'; } .countdown #hour:before { content: '時'; } .countdown #minute:before { content: '分'; } .countdown #second:before { content: '秒'; } } canvas { width: 100%; height: 100%; } ::-webkit-scrollbar { display: none; } #btn{ margin: 40px; width: 100px; height: 30px; backgroundhxYdWOO: pink; text-align: center; color: darkred; line-height: 30px; }
js部分
class Snowflake { constructor() { this.x = 0; this.y = 0; this.vx = 0; this.vy = 0; this.radius = 0; this.alpha = 0; this.reset(); } reset() { this.x = this.randBetween(0,window.innerWidth); this.y = this.randBetween(0,-window.innerHeight); this.vx = this.randBetween(-3,3); this.vy = this.randBetween(2,5); this.radius = this.randBetween(1,4); this.alpha = this.randBetween(0.1,0.9); } randBetween(min,max) { return min + Math.random() * (max - min); } update() { this.x += this.vx; this.y += this.vy; if (this.y + this.radius > window.innerHeight) { this.reset(); } } } class Snow { constructor() { this.canvas = document.createElement('canvas'); this.ctx = this.canvas.getContext('2d'); document.body.appendChild(this.canvas); window.addEventListener('resize',() => this.onResize()); this.onResize(); this.updateBound = this.update.bind(this); requestAnimationFrame(this.updateBound); this.createSnowflakes(); } onResize() { this.width = window.innerWidth; this.height = window.innerHeight; this.canvas.width = this.width; this.canvas.height = this.height; } createSnowflakes() { const flakes = window.innerWidth / 4; this.snowflakes = []; www.cppcns.com for (let s = 0; s < flakes; s++) { this.snowflakes.push(new Snowflake()); } } update() { this.ctx.clearRect(0,this.width,this.height); for (let flake of this.snowflakes) { flake.update(); this.ctx.save(); this.ctx.fillStyle = '#FFF'; this.ctx.beginPath(); this.ctx.arc(flake.x,flake.y,flake.radius,Math.PI * 2); this.ctx.closePath(); this.ctx.globalAlpha = flake.alpha; this.ctx.fill(); this.ctx.restore(); } requestAnimationFrame(this.updateBound); } } new Snow(); var stop = false; function show_runtime() { var newDay = '2022/2/1 00:00:00'; var countDate = new Date(newDay); var now = new Date().getTime(); gap = countDate - now; var second = 1000; var minute = second * 60; var hour = minute * 60; var day = hour * 24; var d = Math.floor(gap / day); var h = Math.floor((gap % day) / hour); var m = Math.floor((gap % hour) / minute); var s = Math.floor((gap % minute) / second); if ((d,h,m,s < 0)) { stop = true; } else { document.getElementById('day').innerText = d; document.getElementById('hour').innerText = h; document.getElementById('minute').innerText = m; document.getElementById('second').innerText = s; } } function newyear() { document.getElementById('title').innerText = 'Happy Spring Festival'; document.getElementById('day').innerText = '春'; document.getElementById('hour').innerText = '節'; document.getElementById('minute').innerText = '快'; document.getElementById('second').innerText = '樂'; } var time = setInterval(() => { show_runtime(); if (stop === true) { newyear(); clearInterval(time); } },1000); // 定時器 控制圖片自動切換 function downTime() { let item = 1; setInterval(() => { item++; if (item === 4) { item = 1; } console.log(item,'item'); document.body.style.backgroundImage = `url(./image/geyao${item}.jpg)`; return item; e.stopPropagation(); //取消事件冒泡 },2000); } window.onload = downTime;
效果演示
移動端
pc端
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