一个简单实现倒计时的小栗子~
效果图：简陋的不能再简陋了，捂脸
代码：
1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title> 倒计时 </title>
5 <meta charset="utf-8">
6 <script type="text/javascript">
7 window.onload = function(){
8 var m = 9; //分
9 var s = 59; //秒
10 var countdown = document.getElementById("title");
11 getCountdown();
12 setInterval(function(){ getCountdown() },1000);
13 function getCountdown (){
14 countdown.innerHTML = "<span>"+m+"</span> ：<span>"+s+"</span>";
15 if( m == 0 && s == 0 ){
16 alert("倒计时结束");
17 m = 9;
18 s = 59;
19 }else if( m >= 0 ){
20 if( s > 0 ){
21 s--;
22 }else if( s == 0 ){
23 m--;
24 s = 59;
25 }
26 }
27 }
28 }
29 </script>
30 </head>
31 <body>
32 <h1>倒计时</h1>
33 <div id="title"></div>
34 </body>
35 </html>
时间： 2024-10-01 22:54:50