<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/jquery/1.8.3/jquery.js"></script>
<title>计时器</title>
</head>
<body>
<div id="time"></div>
<script type="text/javascript">
var timer = 0;
setTimer();
function setTimer(){
timer++;
var hh = parseInt(timer/3600);
var ii = parseInt((timer/60)%60);
var ss = parseInt(timer%60);
if(hh>99)return;
if(hh<10)hh = "0"+hh;
if(ii<10)ii = "0"+ii;
if(ss<10)ss = "0"+ss;
$("#time").html(hh+":"+ii+":"+ss);
t = setTimeout("setTimer()",1000);
}
</script>
</body>
</html>
