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JS操作倒计时代码
<script type ="text/javascript" >
<!--var time="3600";var atime="300";var etime="0";
function count(){
setTimeout("count()",1000); document.form1.rest.value=format(Math.floor(time/60))+"分:"+format(time%60)+"秒"; time--; if(time==atime){ alert("还剩5分钟");
} if(time==etime-1){ alert("时间到，已经自动提交"); document.form1.submit(); }}function format(time){ var len=time.toString().length; for(i="0";i<2-len;i++){ time="0"+time; } return time;}
//-->
</script></head><body> <form id="form1" runat="server"> <div> <input type="button" value="开始" onclick="count();this.disabled=true"/><input type="text" name="rest" value="60分:00秒"/> </div> </form>
