<!DOCTYPE?HTML>
<html>
<head>
<script?type="text/javascript">
var?num=0;
function?numCount(){
?document.getElementById('txt').value=num;
?num=num+1;
?setTimeout("numCount()",5000);
?}
</script>
</head>
<body>
<form>
<input?type="text"?id="txt"?/>
<input?type="button"?value="Start"?onClick="numCount()"?/>
</form>
</body>
</html>
為啥越點擊數(shù)字跳得越快？
像個好人
2017-08-04 16:57:27
