基于HTML实现2023年倒计时
代码实现
代码语言：javascript复制<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>2023倒计时</title>
<!-- <link rel="stylesheet" href="style.css"> -->
<style>
/* 公共基础样式 */
#clockdiv{
width: 300px;
height: 300px;
background-color: #14274F;
color: #fff;
display: flex;
justify-content: center;
align-items: center;
margin: 50px;
}
/* 凸起效果样式 */
#demo1 {
border-left: 1px solid #33B8EC;
border-top: 1px solid #33B8EC;
border-right: 3px solid #000;
border-bottom: 3px solid #000;
color: #ffffff;
}
</style>
</head>
<body>
<div id="clockdiv">
<div id="demo1">
<div>
<div >距离2023年元旦还有</div>
</div>
<div>
<span class="days">0</span>
<div class="smalltext">天</div>
</div>
<div>
<span class="hours">0</span>
<div class="smalltext">小时</div>
</div>
<div>
<span class="minutes">0</span>
<div class="smalltext">分</div>
</div>
<div>
<span class="seconds">0</span>
<div class="smalltext">秒</div>
</div>
</div>
</div>
<script>
// 设定结束时间
var deadline = new Date("2023-01-01 00:00:00").getTime();
// 每秒更新倒计时
var x = setInterval(function() {
// 获取当前时间
var now = new Date().getTime();
// 计算时间差
var t = deadline - now;
// 计算天、小时、分钟、秒
var days = Math.floor(t / (1000 * 60 * 60 * 24));
var hours = Math.floor((t % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((t % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((t % (1000 * 60)) / 1000);
// 显示倒计时
document.getElementsByClassName("days")[0].innerHTML = days;
document.getElementsByClassName("hours")[0].innerHTML = hours;
document.getElementsByClassName("minutes")[0].innerHTML = minutes;
document.getElementsByClassName("seconds")[0].innerHTML = seconds;
// 如果结束时间到了，停止倒计时
if (t < 0) {
clearInterval(x);
document.getElementById("clockdiv").innerHTML = "倒计时结束";
}
}, 1000);
</script>
</body>
</html>输出为：
