<html>
<head>
<title></title>
<script language=javascript>
var lefttime = 100
var tid function b()
{
lefttime = 100
}function x()
{ lefttime--
document.all.xx.innerText ="倒时计:"+lefttime
}
tid = window.setInterval("x()",1000)
</script> </head>
<body>
<table class=tb>
<tr>
<td id=xx></td>
</tr>
<input type=button onclick="b()" value="button">
</table>
</html>
<head>
<title></title>
<script language=javascript>
var lefttime = 100
var tid function b()
{
lefttime = 100
}function x()
{ lefttime--
document.all.xx.innerText ="倒时计:"+lefttime
}
tid = window.setInterval("x()",1000)
</script> </head>
<body>
<table class=tb>
<tr>
<td id=xx></td>
</tr>
<input type=button onclick="b()" value="button">
</table>
</html>
<head>
<title></title>
<script language=javascript>
var lefttime = 100
var tid function b()
{
lefttime = 100
}function x()
{ lefttime--
document.all.xx.innerText ="倒时计:"+lefttime
if(lefttime==0) {clearInterval(tid)}
}
tid = window.setInterval("x()",1000)
</script> </head>
<body>
<table class=tb>
<tr>
<td id=xx></td>
</tr>
<input type=button onclick="b()" value="button">
</table>
</html>
<div id="count">
</div>
<input type="button" value="start" onclick="starts();">
<input type="button" value="stop" onclick="stops();">
</body></html>
<script language="javascript">
i=100;
function goo(){
if(i<=0) return ;
document.getElementById("count").innerHTML = i--;
setTimeout("goo();", 1000);
}
function starts(){
i = 100;
goo();
}
function stops(){
i=0;
}
</script>