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    Ajax按需读取数据生成下级菜单

    作者:admin 时间:2021-09-22 19:13

    jilian.htm
    复制代码 代码如下:

    <script language="javascript">
    var http_request=false;
    function send_request(url){//初始化,指定处理函数,发送请求的函数
    http_request=false;
    //开始初始化XMLHttpRequest对象
    if(window.XMLHttpRequest){//Mozilla浏览器
    http_request=new XMLHttpRequest();
    if(http_request.overrideMimeType){//设置MIME类型
    http_request.overrideMimeType("text/html");
    }
    }
    else if(window.ActiveXObject){//IE浏览器
    try{
    http_request=new ActiveXObject("Xsxml2.XMLHTTP");
    http_request.setRequestHeader("Content-Type","text/xml");
    http_request.setRequestHeader("Content-Type","gb2312");
    }
    catch(e){
    try{
    http_request=new ActiveXObject("Microsoft.XMLHTTP");
    http_request.setRequestHeader("Content-Type","text/xml");
    http_request.setRequestHeader("Content-Type","gb2312");
    }
    catch(e){
    }
    }
    }
    if(!http_request){//异常,创建对象实例失败
    window.alert("不能创建XMLHttpRequest对象实例");
    return false;
    }
    http_request.onreadystatechange=processRequest;
    //确定发送请求的方式和URL以及是否同步执行下段代码
    http_request.open("GET",url,true);
    http_request.send(null);
    }
    //处理返回信息的函数
    function processRequest(){
    if(http_request.readyState==4){//判断对象状态
    if(http_request.status==200){//信息已经成功返回,开始处理信息
    document.getElementById(currentPos).innerHTML=http_request.responseText;
    }
    else{//页面不正常
    alert("您所请求的页面有异常");
    }
    }
    }
    function showRoles(obj){
    document.getElementById(obj).parentNode.style.display="";
    document.getElementById(obj).innerHTML="正在读取数据..."
    currentPos=obj;
    send_request("jilian_data.asp?playPos="+obj);
    }
    </script>

    <table width="200" border="0" cellspacing="0" cellpadding="0">
    <tr>
    <td height="20">
    <a href="javascript:void(0)" onclick="showRoles('pos_1')">经理室
    </a>
    </td>
    </tr>
    <tr style="display:none">
    <td height="20" >&nbsp;</td>
    </tr>
    <tr>
    <td height="20">
    <a href="javascript:void(0)" onclick="showRoles('pos_2')">开发部</a>
    </td>
    </tr>
    <tr style="display:none">
    <td  height="20">&nbsp;</td>
    </tr>
    </td>
    </table>

    jilian_data.asp
    复制代码 代码如下:

    <%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
    <%
    playPos=request("playPos")
    if playPos="pos_1" then
    Response.Write("&nbsp;&nbsp;jingli<br>&nbsp;&nbsp;副总经理")
    end if
    if playPos="pos_2" then
    Response.Write("&nbsp;&nbsp;总工程师<br>&nbsp;&nbsp;软件工程师")
    end if
    %>



    jsjbwy
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