setTimeout(numCount(),1000);里面的numCount()没有加引号运行时就会报栈溢出

源自：8-5 计时器setTimeout()

setTimeout(numCount(),1000);里面的numCount()没有加引号运行时就会报栈溢出

<!DOCTYPE HTML>

<html>

<head>

<script type="text/javascript">

var num=0;

function numCount(){

document.getElementById('txt').value=num;

num=num+1;

setTimeout(numCount(),1000);

}

</script>

</head>

<body>

<form>

<input type="text" id="txt" />

<input type="button" value="Start" onClick="numCount()" />

</form>

</body>

</html>

提问者：Juney_871128 2018-04-25 18:25

个回答

哈利波特哈哈哈

2018-04-27 14:33:26

不加引号的时候也不需要括号，有两种写法：1）setTimeout("numCount()",1000); 2)setTimeout(numCount,1000);

1