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zhaixoahu
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javascript倒计时

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<SCRIPT LANGUAGE="JavaScript">
<!--
var flag = true;
var maxtime;
if(window.name==''){
maxtime = 1*60;
}else{
maxtime = window.name;
}
function reset(){
if(flag == true){
maxtime = 1*60;
timer = setInterval("CountDown()",1000);
}
}
function CountDown(){
flag = false;
if(maxtime>=0){
minutes = Math.floor(maxtime/60);
seconds = Math.floor(maxtime%60);
msg = "距离XXX还有"+minutes+"分"+seconds+"秒";
document.all["timer"].innerHTML = msg;
if(maxtime == 5*60) alert('注意,还有5分钟!');
--maxtime;
window.name = maxtime;
}
else{
flag = true;
clearInterval(timer);
alert("时间到!");
}
}
timer = setInterval("CountDown()",1000);
//-->
</SCRIPT>

<html>
<body>
<div id="timer" style="color:red"></div>
<br>
<input type="button" value="重新开始" onclick="reset()">

</body>
</html>

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