问答详情
源自：3-6 了解成员数量(数组属性length)

为啥输出来上网是未定义的呀？

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>数组长度</title>

<script language="javascript">

 var mynum=new Array(65,90,88,98);

     

 document.write("数组的长度是:"+mynum.lenght);

</script>

</head>

<body>

</body>

</html>


提问者：_慕慕_ 2019-06-20 13:54

个回答

  • 慕田峪347267
    2019-06-20 14:07:42
    已采纳

     document.write("数组的长度是:"+mynum.lenght);

    打错了 是length

    0