延遲1s
<!DOCTYPE?HTML>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8">
<title>計時器</title>
</head>
<script?type="text/javascript">
??var?num=0;
??function?startCount()?{
????document.getElementById('count').value=num;
????num=num+1;
????setTimeout("startCount()",1000);
??}
????setTimeout("startCount()",0);
</script>
</head>
<body>
<form>
<input?type="text"?id="count"?/>
</form>
</body>
</html>
2015-12-25
<!DOCTYPE?HTML>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8">
<title>計時器</title>
</head>
<script?type="text/javascript">
??var?num=0;
??function?startCount()?{
????document.getElementById('count').value=num;
????num=num+1;
????setTimeout("startCount()",500);
??}
????setTimeout("startCount()",500;
</script>
</head>
<body>
<form>
<input?type="text"?id="count"?/>
</form>
</body>
</html>