<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>计时器</title>
<script type="text/javascript">
function clock(){
var time=new Date();
document.getElementById("clock").value = time;
}
var i = setInterval("clock()",100); // 每隔100毫秒调用clock函数，并将返回值赋值给i
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" />
<input type="button" value="Stop" onclick="clearInterval(i)"/>
</form>
</body>
</html>JS计时器，以及取消计时器
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转载自blog.csdn.net/qq_34843861/article/details/81810656
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