<script language="JavaScript">function GetResult(str,classid){ /**--------------- GetResult(str,classid) -----------------* GetResult(str) * 功能:通过XMLHTTP发送请求,返回结果.* 参数:str,字符串,发送条件;classid,数字,菜单级别* 实例:GetResult(document.all.userid.value,1);*--------------- GetResult(str,classid) -----------------*///定义菜单级数，菜单ID数组，菜单对应字段数组var MenuIdArr,MenuFieldArr,MenuClassMenuIdArr= new Array()MenuFieldArr=new Array()MenuClass=4

MenuIdArr[1]="sel1"

MenuIdArr[2]="sel2"MenuIdArr[3]="sel3"MenuIdArr[4]="sel4"

MenuFieldArr[1]="name"

MenuFieldArr[2]="name"MenuFieldArr[3]="name"MenuFieldArr[4]="name"

if (window.XMLHttpRequest) { // Mozilla, Safari, ...    http_request = new XMLHttpRequest();} else if (window.ActiveXObject) { // IE    http_request = new ActiveXObject("Microsoft.XMLHTTP");}

var linkurl="ajax_server.asp?classid="+classid+"&sel="+str+"&fieldname="+MenuFieldArr[classid+1]http_request.open("GET",linkurl,false);http_request.send(null);

//服务器端处理返回的是经过escape编码的字符串.

//在页面显示服务器查询结果

var returntxt=unescape(http_request.responseText)

if(returntxt.length>0){document.all,ajax.innerHTML="服务器返回结果："+returntxt+"   [Powered by AJAX]"}else{document.all,ajax.innerHTML=""}

//通过XMLHTTP返回数据,开始构建Select.

//BuildSel(returntxt,eval("document.all."+MenuIdArr[classid+1]))BuildSel(returntxt,document.getElementById(MenuIdArr[classid+1]))

//============更改下下级以下菜单为空==============

var kkkfor(kkk=classid+2;kkk<=MenuClass;kkk++) {   submenu=document.getElementById(MenuIdArr[kkk])  submenu.length=1 submenu.options[0].selected=true }}

function BuildSel(str,sel)

{ /**--------------- BuildSel(str,sel) -----------------* BuildSel(str,sel) * 功能:通过str构建Select.* 参数:str,字符串,由服务端返回的.有特定结构"字符串1|,字符串2,字符串3"*          也可为"字符串1序号|字符串1文本,字符串2序号|字符串2文本,字符串3序号|字符串3文本",如本例* 参数:sel,要构建的Select* 实例:BuildSel(unescape(oBao.responseText),document.all.sel2)*--------------- BuildSel(str,sel) -----------------*///先清空原来的数据.sel.options.length=0;var arrstr = new Array();arrstr = str.split(",");//开始构建新的Select.sel.options.add(new Option( "-----请选择-----",""));  if(str.length>0)   { for(var i=0;i { //分割字符串 var subarrstr=new Array subarrstr=arrstr[i].split("|") //生成下级菜单 sel.options.add(new Option(subarrstr[1],subarrstr[0])); } sel.options[0].selected=true }

}

</script>

   

       

         

           

琥珀无限级联动菜单-AJAX版 [HPMenu_AJAX V1.0]

                   

           

所 在 洲:

           

-----请选择-----               亚洲               欧洲

                   

           

国　　家:

           

-----请选择-----

                   

           

城　　市:

           

-----请选择-----

                   

           

地　　区:

           

-----请选择-----

                   

           

            

    

    

         

           

                   

           

                   

           

                   

           

                   

           

                   

           

                 

        <script language="javascript">

  GetResult(document.getElementById("sel1").value,1)       

        </script>

 源代码下载：

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