為什么停止不了，求助
<!DOCTYPE?HTML>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8">
<title>計時器</title>
<script?type="text/javascript">
???function?clock(){
??????var?time=new?Date();??????????????? ??
??????document.getElementById("clock").value?=?time;
???}
???setInterval(clock,50);??
</script>
</head>
<body>
??<form>
????<input?type="text"?id="clock"?size="50"??/>
????<input?type="button"?value="Stop"?onclick="clearInterval(int)"?/>
??</form>
</body>
</html>
2015-03-10
var i=setInterval("clock()",100);?
<input type="button" value="Stop"
???? onclick="clearInterval(i)"/>
setInterval和clearInterval只是執行事件，clear清除Interval(i)，你的沒有參數
2015-03-10
vat t =?setInterval(clock,50);?
clearInterval(t);
2015-03-10
var timer = setInterval(clock,50);
條件判斷后用clearInterval(timer)吧.