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<html>
<body>
<input type="text" id="clock" size="35" />
<script language=javascript>
var int=self.setInterval("clock()",50)
function clock()
{
var t=new Date()
document.getElementById("clock").value=t
}
</script>
</form>
<button onclick="int=window.clearInterval(int)">
Stop interval</button>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>demo</TITLE>
<META http-equiv="content-type" content="text/html;charset=gbk"/>
<META NAME="Generator" CONTENT="CSS">
<META NAME="Author" CONTENT="zhangqian">
<META NAME="Keywords" CONTENT="mydemo">
<META NAME="Description" CONTENT="this is my demo">
<LINK rel="stylesheet" type="text/css" href=""></LINK>
<style type="text/css">
body
{
}
</style>
<script type="text/javascript" src=""></script>
</HEAD>
<BODY>
<input type="text" name="t" id="t" />
<script type="text/javascript">
var i=0;
function test()
{
i++;
document.getElementById("t").value=i;
}
setInterval("test()",1000);
</script>
</BODY>
</HTML>