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HTML/XHTML教程
HTML表格标记教程(37):表头的背景图象属性BACKGROUND
HTML表格标记教程(41):表头的宽度和高度属性WIDTH、HEIGHT
HTML表格标记教程(36):表头的背景色属性BGCOLOR
揭开HTML 5工作草稿的神秘面纱
清除网页文字水印的两种简单方法
W3C公布最新的HTML5标准草案
XHTML与CSS的面向对象编程
XHTML三种文件类型声明
通过实例掌握BR和P标签的区别
网页表格或div层在网页中被撑开解决之道
网页设计之网页音乐的实现技巧
XHTML常用标签介绍
HTML网页图片标记
网页表单设计实例技巧五则
HTML网页列表标记学习教程
HTML网页超链接标记
HTML表单标记教程(4):
HTML表单标记教程(5):文字域标记
HTML表单标记教程(2):
HTML表单标记教程(3):输入标记

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: 42 ::
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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>