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Html+Css+js实现春节倒计时效果（移动端和PC端）

前言

我是歌谣 我有个兄弟 巅峰的时候排名c站总榜19 叫前端小歌谣 曾经我花了三年的时间创作了他 现在我要用五年的时间超越他 今天又是接近兄弟的一天人生难免坎坷 大不了从头再来 歌谣的意志是永恒的 放弃很容易 但是坚持一定很酷

导语

歌谣 歌谣 新的一年就要到了 可否写一个春节的倒计时呢 我想看看哪天可以过春节

效果预览

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">
    <link rel="stylesheet" href="css/mobile.css">
    <title>春节倒计时</title>
  </head>
  <body>
    <div class="container">
      <h2><span id="title">春节倒计时</span>2022</h2>
      <div class="countdown">
        <div id="day">--</div>
        <div id="hour">--</div>
        <div id="minute">--</div>
        <div id="second">--</div>
      </div>
      <!-- 手动切换不好看 直接加定时器切换 微信公众号关注前端小歌谣
       -->
      <!-- <div id="btn">切换背景</div> -->
    </div>
      <script  src="js/script.js"></script>
 
  </body>
</html>

移动端样式（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 {
        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';
    }
}

pc端样式（style.css）


* {
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
}
@media screen and (min-width: 1025px) {
    body {
        background: rgb(129, 155, 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, 0, 0.8),
            0 0 0 100px rgba(0, 0, 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: '时';
    }
    .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;
  background: 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 = [];
    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;

效果演示

移动端

pc端

总结

在过往的岁月中,我遇到了形形色色的人和事情。有的人坚持，有的人放弃。 有的人逆袭，有的人失败。最好的种树是十年前，其次是现在。很高兴遇到你, 愿你的人生多姿多彩，幸福绵绵，好事连连 喜欢请一键三连 谢谢~

标签： html css javascript
本文转载自: https://blog.csdn.net/geyaoisnice/article/details/122460313
版权归原作者 前端大歌谣 所有， 如有侵权，请联系我们删除。
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