<HTML>
<HEAD> <script language="javascript">
var time;
var Min=90;
var Sec=0;
var flag=false;
function Start()
{
Min=document.all.SurplusTime.value;
Sec=document.all.SecondTime.value;
if (Min=="05"&&Sec=="00")
{
alert("时间到了");
}
if(Min==-10)
{
Min=Min+1;
Sec=Sec+1;
}
else
{
if(flag==false)
{
Min=document.all.SurplusTime.value;
Sec=document.all.SecondTime.value;
if (Min=="05"&&Sec=="00")
{
alert("时间到了");
}
flag=true;
}
else
{
Sec=Sec-1;
if(Min==0&&Sec==0)
{
TimeOver();
}
else
{
if(Sec==-1)
{
Min=Min-1;
Sec=59;
}
}
}
if(Sec<10)
{
document.all.SurplusTime.value=Min;
document.all.SecondTime.value="0"+Sec;
}
else
{
document.all.SurplusTime.value=Min;
document.all.SecondTime.value=Sec;
}
}
setTimeout("Start()",1000);
}
</script>
</HEAD>
<body onload="Start()">
<form id="Form1" method="post" >
<INPUT id="SurplusTime" type="text" size="1" name="SurplusTime"value="05"><FONT face="宋体">分:</FONT><INPUT id="SecondTime" type="text" size="1" value="10" name="SecondTime" ><FONT face="宋体">秒</FONT>
</form>
</body>
</HTML>
<HEAD> <script language="javascript">
var time;
var Min=90;
var Sec=0;
var flag=false;
function Start()
{
Min=document.all.SurplusTime.value;
Sec=document.all.SecondTime.value;
if (Min=="05"&&Sec=="00")
{
alert("时间到了");
}
if(Min==-10)
{
Min=Min+1;
Sec=Sec+1;
}
else
{
if(flag==false)
{
Min=document.all.SurplusTime.value;
Sec=document.all.SecondTime.value;
if (Min=="05"&&Sec=="00")
{
alert("时间到了");
}
flag=true;
}
else
{
Sec=Sec-1;
if(Min==0&&Sec==0)
{
TimeOver();
}
else
{
if(Sec==-1)
{
Min=Min-1;
Sec=59;
}
}
}
if(Sec<10)
{
document.all.SurplusTime.value=Min;
document.all.SecondTime.value="0"+Sec;
}
else
{
document.all.SurplusTime.value=Min;
document.all.SecondTime.value=Sec;
}
}
setTimeout("Start()",1000);
}
</script>
</HEAD>
<body onload="Start()">
<form id="Form1" method="post" >
<INPUT id="SurplusTime" type="text" size="1" name="SurplusTime"value="05"><FONT face="宋体">分:</FONT><INPUT id="SecondTime" type="text" size="1" value="10" name="SecondTime" ><FONT face="宋体">秒</FONT>
</form>
</body>
</HTML>
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