为什么要在函数里写setTimeout("startCount()",1000);外面那行不就代表每隔一秒执行一次num++吗

源自：8-5 计时器setTimeout()

<!DOCTYPE HTML>

<html>

<head>

</head>

var num=0;

function startCount() {

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

num=num+1;

setTimeout("startCount()",1000);

}

setTimeout("startCount()",1000);

</script>

</head>

<body>

<form>

</form>

</body>

</html>

提问者：枭菜菜 2016-12-07 17:01