jquery二级联动查询问题

Question

点击 选择父菜单，点查询按钮后，子菜单显示全部内容了，
如何改，才会只显示父菜单下的子菜单

[code="java"]

$(function(){ $("#dropLang").unbind("change", eDropLangChange).bind("change", eDropLangChange); $("#dropFrame").unbind("change", eDropFrameChange).bind("change", eDropFrameChange); }); var eDropLangChange = function(){ var selectedValue = $(this).val(); $("#dropFrame").children("span").each(function(){ $(this).children().clone().replaceAll($(this)); }); if(parseInt(selectedValue) != 0){ $("#dropFrame").children("option[parentid!='" + selectedValue + "'][value!='0']").each(function(){ $(this).wrap("<span style='display:none'></span>"); }); } }; var eDropFrameChange = function(){ $("#dropLang").val($(this).children("option:selected").attr("parentid")); };

<%
String dropLangs="",dropFrame="";
if(request.getParameter("dropLang")!=null&&request.getParameter("dropLang")!=""){
dropLangs=request.getParameter("dropLang");
}
if(request.getParameter("dropFrame")!=null&&request.getParameter("dropFrame")!=""){
dropFrame=request.getParameter("dropFrame");
}

%>

请选择
>Javascript
>Java
>C#


请选择
>JQuery
>Prototype
>Struts
>Spring
>Velocity
>Hibernate
>ASP.NET MVC
>Castle

[/code]

Answer 1

[code="java"]

$(function(){ $("#dropLang").unbind("change", eDropLangChange).bind("change", eDropLangChange); $("#dropFrame").unbind("change", eDropFrameChange).bind("change", eDropFrameChange); eChange($("#dropLang")); }); var eDropLangChange = function(){ eChange($(this)); }; function eChange(select) { var selectedValue = select.val(); $("#dropFrame").children("span").each(function(){ $(this).children().clone().replaceAll($(this)); }); if(parseInt(selectedValue) != 0){ $("#dropFrame").children("option[parentid!='" + selectedValue + "'][value!='0']").each(function(){ $(this).wrap("<span style='display:none'></span>"); }); } } var eDropFrameChange = function(){ $("#dropLang").val($(this).children("option:selected").attr("parentid")); };

<%
String dropLangs="",dropFrame="";
if(request.getParameter("dropLang")!=null&&request.getParameter("dropLang")!=""){
dropLangs=request.getParameter("dropLang");
}
if(request.getParameter("dropFrame")!=null&&request.getParameter("dropFrame")!=""){
dropFrame=request.getParameter("dropFrame");
}

%>

请选择
>Javascript
>Java
>C#


请选择

>JQuery
>Prototype

>Struts
>Spring
>Velocity
>Hibernate
>ASP.NET MVC
>Castle

[/code]