js中关于setTimeout的问题
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>计时器</title>
</head>
<script type="text/javascript">
window.onload = function(){
var num = 0;
function startCount(){
document.getElementById("count").value = num;
num = num+1;
setTimeout(startCount,1000); //为什么这里不能用setTimeout("startCount()",1000);
}
startCount();
}
</script>
</head>
<body>
<form>
<input type="text" id="count" />
</form>
</body>
</html>
B1anker浏览 1473回答 3
3回答
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黑女2008
亲测可以 -
B1anker
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>计时器</title> </head> <script type="text/javascript"> var num=0; function startCount() { document.getElementById('count').value=num; num=num+1; setTimeout("startCount()",1000); } setTimeout("startCount()",1000);//还有这里为什么不能用startCount(); </script> </head> <body> <form> <input type="text" id="count" /> </form> </body> </html> -
B1anker
<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>计时器</title></head><script type="text/javascript"> var num=0; function startCount() { document.getElementById('count').value=num; num=num+1; setTimeout("startCount()",1000); } setTimeout("startCount()",1000);//还有这里为什么不能用startCount();</script></head><body><form><input type="text" id="count" /></form></body></html>
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JavaScript