87,955
社区成员
![](https://csdnimg.cn/release/cmsfe/public/img/topic.427195d5.png)
![](https://csdnimg.cn/release/cmsfe/public/img/me.40a70ab0.png)
![](https://csdnimg.cn/release/cmsfe/public/img/task.87b52881.png)
![](https://csdnimg.cn/release/cmsfe/public/img/share-circle.3e0b7822.png)
<html>
<head>
<script language="javascript" type="text/javascript">
alert(document.getElementById("member").options.length)
</script>
</head>
<body>
<select id="member">
<option value="1"></option>
</select>
</body>
</html>
<html>
<head>
<title>this is test</title>
</head>
<body>
<select id="member">
<option value="1"></option>
</select>
<script language="javascript" type="text/javascript">
alert(document.getElementById("member").options.length);
</script>
</body>
</html>