这个春节刚刚过去，现在我们用所学的知识来制作一个小案列，利用html css js来制作一个距离下一个春节还有多少天，我来为大家讲解一下关于html编写倒计时?跟着小编一起来看一看吧!
html编写倒计时
这个春节刚刚过去，现在我们用所学的知识来制作一个小案列，利用html css js来制作一个距离下一个春节还有多少天。
首先我们还是准备代码编辑器：
给大家介绍我个人比较喜欢的2款免费代码编辑器这款为国产代码编辑器 HBuilder
此款为国外好用的Sublime编辑器 同样免费
进入正题分别建立三个文件 html css js
第一个是html结构文件：命名为 index.html 代表首页。
第二个是css样式文件：命名为wp_style.css和pc_style.css，两个文件，因为涉及到电脑端运行和手机端运行。
第三个是js也就是JavaScript逻辑文件：命名为script.js。
直接上代码：
这是html页面的代码
<!DOCTYPE html>
<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/wp_style.css">
<link rel="stylesheet" href="css/pc_style.css">
<title>2023年春节倒计时</title>
</head>
<body>
<div class="container">
<h2><span id="title">癸卯兔年</span>距离2023年春节还有</h2>
<!-- <h3><span id="title">距离下一年春节还有</span></h3> -->
<div class="countdown">
<div id="day">--</div>
<div id="hour">--</div>
<div id="minute">--</div>
<div id="second">--</div>
</div>
</div>
<script src="js/script.js"></script>
</body>
</html>
这是css样式的代码：电脑端
@media screen and (max-width: 1025px) {
* {
margin: 0;
padding: 0;
}
body {
background-color: #CC0033;
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: 2em;
text-align: center;
margin: 10% 0;
color: #fff;
}
.container h2 span {
color: #fff;
display: block;
text-align: center;
font-size: 2.3em;
font-weight: 800;
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: #444444;
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: #fff;
color: #CC0000;
font-size: 0.4em;
line-height: 30px;
font-weight: 400;
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';
}
}
这是css样式的代码：手机端
* {
margin: 0;
padding: 0;
font-family: 'Poppins', sans-serif;
}
@media screen and (min-width: 1025px) {
body {
background-color: #CC0033;
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: 4em;
line-height: 1.5em;
color: #ffffff;
margin-top: -80px;
}
.container h2 span {
display: block;
font-weight: 400;
letter-spacing: 6px;
font-size: 1em;
}
.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;
}
最后是逻辑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 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 = '2023/1/21 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);
window.onload = downTime;
这是从代码编辑器上运行浏览器
在PC浏览器上运行 倒计时代码 效果
手机浏览器上运行倒计时代码的效果
好了，一个简单的小案列就展示到这，喜欢的同学们可以动手试一下，不懂的同学可以在我的视频课程中去学习，希望能够帮到您们，新的一年相遇就是缘分，很高兴认识你们，祝愿您们新的一年里顺顺利利，好事连连！！！
