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- HTML/XHTML教程
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- W3C教程(14):W3C RDF和OWL活动
- W3C教程(16):其他的W3C活动
- W3C教程(13):W3C WSDL 活动
- W3C教程(15):W3C SMIL 活动
- 作用相似html标记:strong与em、q、cite、blockquote
- html 基底网址标记
- GET POST 区别详解
- 圆角矩形的html+css实现代码
- HTML title 属性换行的办法
- html tbody 用法
- nofollow让评论和留言中的链接起到真正的作用
HTML/XHTML教程 中的 连动下拉菜单
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-11-04 浏览: 48 ::
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<html>
<head>
<title>List</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script LANGUAGE="javascript">
<!--
var onecount;
onecount=0;
subcat = new Array();
subcat[0] = new Array("徐汇区","01","001");
subcat = new Array("嘉定区","01","002");
subcat = new Array("黄浦区","01","003");
subcat = new Array("南昌市","02","004");
subcat = new Array("九江市","02","005");
subcat = new Array("上饶市","02","006");
onecount=6;
function changelocation(locationid)
{
document.myform.smalllocation.length = 0;
var locationid=locationid;
var i;
document.myform.smalllocation.options[0] = new Option('====所有地区====','');
for (i=0;i < onecount; i++)
{
if (subcat[i] == locationid)
{
document.myform.smalllocation.options[document.myform.smalllocation.length] = new Option(subcat[i][0], subcat[i]);
}
}
}
//-->
</script>
</head>
<body>
<form name="myform" method="post">
<select name="biglocation" onChange="changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value)">
<option value="01" selected>上海</option>
<option value="02">江西</option>
</select>
<select name="smalllocation">
<option selected value="">==所有地区==</option>
</select>
</form>
<script LANGUAGE="javascript">
<!--
changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value);
//-->
</script>
</body>
</html>
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