<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>倒计时实现</title>
<style>
ul, li {
margin: 0;
padding: 0;
list-style: none;
}
#countdown {
font-size: 50px;;
width: 350px;
margin: 0 auto;
background-image: none;
color: #fff;
padding: 100px;
font-weight: bolder;
}
#countdown ul {
display: flex;
align-items: flex-start;
justify-content: center;
}
#countdown ul li{
display: inline-block;
margin-left: 10px;
}
#countdown ul li:last-child {
margin-right: 10px;
}
#countdown ul li strong {
text-shadow: 5px 5px 5px #000;
}
#countdown ul li strong, #countdown ul li span {
display: block;
text-align: center;
}
#sec {
color: #ff0000;
text-shadow: 5px 5px 2px #ff0000;
}
</style>
</head>
<body>
<div id="countdown">
<ul>
<li>
<strong id="day">00</strong>
<span>天</span>
</li>
<li>:</li>
<li>
<strong id="hour">00</strong>
<span>时</span>
</li>
<li>:</li>
<li>
<strong id="min">00</strong>
<span>分</span>
</li>
<li>:</li>
<li>
<strong id="sec">00</strong>
<span>秒</span>
</li>
</ul>
</div>
</body>
</html>
//结束时间
var t_endtime = new Date("2016-05-22 00:00:00");
// 时间换算规则 var t_day = 60 * 60 * 24; var t_hour = 60 * 60; var t_min = 60;
var ele_day = document.getElementById("day");
var ele_hour = document.getElementById("hour");
var ele_min = document.getElementById("min");
var ele_sec = document.getElementById("sec");
setInterval(function () {
//获取当前时间
var t_currenttime = new Date();
//结束时间 - 当前时间 = 剩余时间
var t_result = t_endtime.getTime() - t_currenttime.getTime();
//剩余时间换算
var t_time = Math.floor( t_result / 1000 );
var t_result_day = Math.floor( t_time / t_day );
var t_result_hour = Math.floor( t_time % t_day / t_hour);
var t_result_min = Math.floor(t_time % t_day % t_hour/ t_min);
var t_result_sec = Math.floor( t_time % t_day % t_hour % t_min);
// 将时间小于10的,在值前面加入0;
if ( t_result_day < 10) {
t_result_day = "0" + t_result_day;
}
if ( t_result_hour < 10) {
t_result_hour = "0" + t_result_hour;
}
if ( t_result_min < 10) {
t_result_min = "0" + t_result_min;
}
if ( t_result_sec < 10) {
t_result_sec = "0" + t_result_sec;
}
//显示到页面上
ele_day.textContent = t_result_day;
ele_hour.textContent = t_result_hour;
ele_min.textContent = t_result_min;
ele_sec.textContent = t_result_sec;
}, 1000);
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