很急的问题！！有关js和asp

[SadEmprie]

不知道能不能在一页中实现以下功能,不用<iframe>
即选择第一个下拉框中的内容后，根据所选内容在紧跟的一个下拉列框中动态的现实选项？

[emu]

唉，怎么又是这个问题啊？

http://www.csdn.net/expert/topic/1073/1073061.xml?temp=.1590235

[利而不害]

这个问题已经被问烂了，老兄

[Reker熊]

真的是问烂了
你还是去搜索吧，不过还是给你个例子



<script language = "JavaScript">
var onecount;
onecount=0;
subcat = new Array();

subcat[0] = new Array("ASP基础","2","1");

subcat[1] = new Array("ASP应用","2","2");

subcat[2] = new Array("ASP技巧","2","3");

subcat[3] = new Array("性能优化","2","4");

subcat[4] = new Array("安全加密","2","5");

subcat[5] = new Array("XML相关","2","6");

subcat[6] = new Array("全文检索","2","7");

subcat[7] = new Array("客户端相关","2","8");

subcat[8] = new Array("打印相关","2","9");

subcat[9] = new Array("数据库相关","2","10");

subcat[10] = new Array("入门教程","3","11");

subcat[11] = new Array("FTP/HTTP/Debug","3","12");

subcat[12] = new Array("XML应用","3","13");

subcat[13] = new Array("图像处理","3","14");

subcat[14] = new Array("数据库操作","3","15");

subcat[15] = new Array("文件处理","3","16");

subcat[16] = new Array("MS Access","5","17");

subcat[17] = new Array("MS SQL","5","18");

subcat[18] = new Array("DB2","5","19");

subcat[19] = new Array("Oracle","5","20");

subcat[20] = new Array("Application/Applet","4","21");

subcat[21] = new Array("J2EE/EJB/服务器","4","22");

subcat[22] = new Array("J2ME开发","4","23");

subcat[23] = new Array("Java基础","4","24");

subcat[24] = new Array("Java技巧及代码","4","25");

subcat[25] = new Array("Jsp/Servlet","4","26");

subcat[26] = new Array("正则表达式","2","27");

subcat[27] = new Array("系统相关","2","28");

subcat[28] = new Array("组件开发","2","29");

subcat[29] = new Array("脚本编码","2","30");

subcat[30] = new Array("远程脚本","2","31");

subcat[31] = new Array("邮件相关","2","32");

subcat[32] = new Array("FSO专题","2","33");

subcat[33] = new Array(".NET概论及软件使用","1","34");

subcat[34] = new Array("Asp.Net开发","1","35");

subcat[35] = new Array("C#语言","1","36");

subcat[36] = new Array("VB.net语言","1","37");

subcat[37] = new Array("E-mail专题","1","38");

subcat[38] = new Array("WebService","1","39");

subcat[39] = new Array("winform应用","1","40");

subcat[40] = new Array("window app开发","1","41");

subcat[41] = new Array("winsock应用","1","42");

subcat[42] = new Array("XML应用","1","43");

subcat[43] = new Array("数据库应用","1","44");

subcat[44] = new Array("综合应用","1","45");

subcat[45] = new Array("OO相关","1","46");

subcat[46] = new Array("文件操作","1","47");

subcat[47] = new Array("算法/线程","1","48");

subcat[48] = new Array("软件工程","1","49");

subcat[49] = new Array("面向对象程序基础","1","50");

subcat[50] = new Array("SOAP/UDDI/WSDL","1","51");

subcat[51] = new Array("控件开发和使用","1","52");

subcat[52] = new Array("MySQL","5","53");

subcat[53] = new Array("Sybase","5","54");

subcat[54] = new Array("DataWarehouse","5","55");

subcat[55] = new Array("Replication","5","56");

subcat[56] = new Array("Performance Turning","5","57");

subcat[57] = new Array("FAQ","5","58");

subcat[58] = new Array("邮件处理","3","59");

subcat[59] = new Array("开发工具","4","60");

subcat[60] = new Array("调试手记","4","61");

subcat[61] = new Array("面向对象/设计","4","62");

subcat[62] = new Array("企业级应用","4","63");

subcat[63] = new Array("嵌入式开发","4","64");

subcat[64] = new Array("Java与XML","4","65");

subcat[65] = new Array("资料/其它","4","66");

onecount=66;

function changelocation(locationid)
{
document.myform.Nclassid.length = 0;

var locationid=locationid;
var i;
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
document.myform.Nclassid.options[document.myform.Nclassid.length] = new Option(subcat[i][0], subcat[i][2]);
}
}

}
</script>

<form method="post" name="myform" action="ru_query.asp">
文章搜索：
<select name="action" size="1">
<option value="title">文章标题</option>
</select>
<select name="classid" onChange="changelocation(document.myform.classid.options[document.myform.classid.selectedIndex].value)" size="1">
<option selected value="">未指定条件</option>

<option value="1">.Net专区</option>


<option value="2">ASP技术</option>


<option value="3">PHP技术</option>


<option value="4">JSP技术</option>


<option value="5">数据库</option>


</select>

<select name="Nclassid">
<option selected value="">未指定条件</option>
</select>
<input type="text" name="keyword" class=smallinput size=10 value="关键字" maxlength="50">
<input type="submit" name3

[bamboo2000]

搜索一下吧
比上面那个还简单的也有