自己写的ajax处理工具

/*******************************/
//operType : string , 标注的操作方式，"addMarker","editMarker","removeMarker"
//level    : string , 级别
//name     : string , 名称
//ico      : string ,图标链接地址
//location : LTPoint,标注的地理位置
//successCallBack : function, 数据提交成功后的回调函数
//falseCallBack   : function,数据提交失败后的回调函数
//var successCallBack1;
//var falseCallBack1;
//var xhr2;
//编写人：LFP


//////////////////////add by lfp 2008.8.15/////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

var successCallBack1;
var falseCallBack1;
var xhr2;

function Ajax2(operType,level,name,ico,location,url,successCallBack,falseCallBack)
{  

    this.operType = operType;
    this.level = level;
    this.name = name;
    this.ico = ico;
    
    
    
    this.location = location
    this.url = url;
    successCallBack1 = successCallBack;
    falseCallBack1 = falseCallBack;
    
    xhr2 = LTAjax.createHttpRequest();
}

//提交标注数据到服务器
Ajax2.prototype.postMarkerData = function ()
{   


    var xmlData = "<Marker>";
    
    xmlData += "<Level>" + this.level + "</Level>";
    xmlData += "<Name>" + this.name + "</Name>";
    xmlData += "<Icon>" + this.ico.replace("http://" + window.location.host,"") + "</Icon>";
    xmlData += "<Latitude>" + this.location.getLatitude() + "</Latitude>";
    xmlData += "<Longitude>" + this.location.getLongitude() + "</Longitude>";
    xmlData += "</Marker>";
    
    //xmlData = xmlData.replace(/</gi,"&lt;").replace(/>/gi,"&gt;");
    var pars = "oper=" + this.operType + "&xml=" + xmlData;
    
   
    xhr2.open("POST",this.url,false);   
    xhr2.setRequestHeader("Content-Length",xmlData.length); 
    xhr2.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded");
    xhr2.onreadystatechange = this.xhr2CallBack; 
    xhr2.send(pars);
}

//提交标注数据后的回调函数
Ajax2.prototype.xhr2CallBack = function (obj)
{
    if (xhr2.readyState==4 || xhr2.readyState=="complete")
    { 
        if(xhr2.status == 200 || xhr2.status == 304)
        {
        var str=xhr2.responseText;
        var length1=str.length-1;
        var sss=str.substring(length1,str.length);
       
      
             if(xhr2.responseText.substring(length1,str.length) == "1")   //需要取分号后面的值
             {
                successCallBack1();
                //this = null;
              }
              else
              {  
               falseCallBack1();
              }
         }
     } 
}


//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

///////////////Ajax3/ add by LFP 2008.8.14 Begin/////////////////////////////////////
//Ajax3类功能：主要完成以xml作为参数传入的ajax请求处理

var successCallBack2;
var falseCallBack2;
var xhr3;

function Ajax3(operType,xmlData,url,successCallBack,falseCallBack)
{   
    this.operType=operType;
    this.xmlData=xmlData;
    this.url = url;
    successCallBack2 = successCallBack;
    falseCallBack2 = falseCallBack;
    
    xhr3 = LTAjax.createHttpRequest();
}

//提交标注数据到服务器
Ajax3.prototype.postMarkerData= function ()
{   
 
    
    //xmlData = xmlData.replace(/</gi,"&lt;").replace(/>/gi,"&gt;");
    var pars = "oper=" + this.operType + "&xml=" +this.xmlData;
    
 alert(pars);
    
    xhr3.open("POST",this.url,false);   
    xhr3.setRequestHeader("Content-Length",this.xmlData.length); 
    xhr3.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded");
    xhr3.onreadystatechange = this.xhr2CallBack; 
    xhr3.send(pars);
}


//提交标注数据后的回调函数
Ajax3.prototype.xhr2CallBack = function (obj)
{
    if (xhr3.readyState==4 || xhr3.readyState=="complete")
    { 
        if(xhr3.status == 200 || xhr3.status == 304)
        {var str=xhr3.responseText;
        var length1=str.length-1;
        var sss=str.substring(length1,str.length);
        alert(str);
        alert(sss);
             if(xhr3.responseText.substring(length1,str.length) == "1")   //需要取分号后面的值
             {
             
               
                successCallBack2("xhr2CallBack3");
                //this = null;
              }
              else
              {  
               falseCallBack2();
              }
         }
     } 
}

///////////////Ajax3/ add by LFP 2008.8.14 End/////////////////////////////////////


// Ajax 封装 2007-3-13
function createXMLHttpRequest() {
    try {        
            if (window.XMLHTTPRequest) {
                    return new XMLHttpRequest();
            }
            else if (window.ActiveXObject) {
                return new ActiveXObject("Microsoft.XMLHTTP");
            }
        }
        catch (e) {alert("XMLHttpRequest对象无法创建！请检查IE安全设置！");}
}
function messageDiv(t)
{
    var v = document.createElement("<div>");
    v.innerHTML = "<table style=\"width:300px;\" id=message>" +
                  "<tr style=\"font-size:12px;background-color:#EEEEff;color:#227933;height:20px\">" + 
                  "<td style=\"padding:2px;border-top:1px solid #E1E1E1;border-left:1px solid #E1E1E1;border-bottom:1px solid #818181;border-right:1px solid #A1A1A1\">" +
                  "<nobr><img src=refresh.gif align=absmiddle& gt; " + t + ",<span id=Span1>连接未初始化</span></nobr>& lt;/td></tr></table>";
    var l = document.getElementsByName("message").length;
    v.style.cssText = "position:absolute;bottom:" + (l*24) + "px;left:0px;display:none";
    document.body.appendChild(v);
    this.clear = function () {
        document.body.removeChild(v);
        var msg = document.getElementsByName("message");
        for (var i=0;i<msg.length;i++){
            msg[i].parentNode.style.cssText = "position:absolute;bottom:" + (i*24) + "px;left:0px";
        }
    }
    this.showmsg = function (s) {
        v.style.display = "";
        //v.all.Span1.innerHTML = s;
    }
}
function Ajax() {
    var x = new createXMLHttpRequest();
    this.Request = function (url,cmd,async,method,postString,title) {
        if (method=="post") method = "post"; else method = "get";
        if (async==true) async = true; else async = false;
        if (typeof(postString)!="string") postString="";
        if (typeof(title)!="string") title="正在获取数据"; else title="正在获取" + title;
        var msgbox = new messageDiv(title);
        x.onreadystatechange = function ()
        {
            if (async) switch (x.readystate) {
            case 1:
                msgbox.showmsg("正在初始化连接");
                return;
            case 2:
                msgbox.showmsg("正在发送数据");
                return;
            case 3:
                msgbox.showmsg("正在接收数据");
                return;
            case 4:
                msgbox.showmsg("数据接收完成");
                if (x.status == 200) {
                    cmd(x.responseText);
                    msgbox.clear();
                }
                else {
                    msgbox.showmsg("请求失败," + x.statustext + "(" + x.status + ")");
                    setTimeout(msgbox.clear,3000);
                }
                return;
            }
        }
        x.open (method,url,async);
        if (method=="post") {msgbox.showmsg("正在接收数据");x.setRequestHeader("Content-Length",postString.length);x.setRequestHeader("CONTENT-TYPE","application/x-www-form-urlencoded"); x.send(postString);} else x.send();
        if (!async) {
            msgbox.showmsg("数据接收完成");
            cmd(x.responseText);
            msgbox.clear();
        }
    }    
}