html|Html+Css+js实现春节倒计时效果 javascript|css

效果图

文章图片

HTML部分

春节倒计时 - 锐客网 id="title">春节倒计时2022 -- -- -- --

css样式

* { margin: 0; padding: 0; } body { background: rgb(129, 155, 190) url(../image/image.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 { width: 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: '时'; } .countdown #minute:before { content: '分'; } .countdown #second:before { content: '秒'; }

【html|Html+Css+js实现春节倒计时效果】js代码

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 Countdown{ 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 = []; for (let s = 0; s < flakes; s++) { this.snowflakes.push(new Snowflake()); } } update() { this.ctx.clearRect(0, 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, 0, 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 = '节'; document.getElementById('minute').innerText = '快'; document.getElementById('second').innerText = '乐'; } var time = setInterval(() => { show_runtime(); if (stop === true) { newyear(); clearInterval(time); } }, 1000); // 定时器控制图片自动切换 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;