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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!DOCTYPE html><HTML lang="ch">
<HEAD>
<META charset="UTF-8">
<TITLE>计时器</TITLE>
<script src="js/jquery-2.1.0.min.js"></script>
<SCRIPT type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById(‘txt‘).value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
function stopCount()
{
c=0;
setTimeout("document.getElementById(‘txt‘).value=0",0);
clearTimeout(t);
}
</SCRIPT>
<link rel="stylesheet" type="text/css" href="css/wutong.css">
<META name="GENERATOR" content="MSHTML 9.00.8112.16421"></HEAD>
<BODY onload="init()">
<form>
<input type="button" value="开始计时!" onClick="timedCount()">
<input type="text" id="txt">
<input type="button" value="停止计时!" onClick="stopCount()">
</form>
</BODY>
</HTML>
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原文地址：http://www.cnblogs.com/jinjin-time/p/5841355.html
