ajax.js

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function MagicAjax()
{
    this.errorMsg = new Array("ajax 调用发生错误","缺少类名或方法名","参数错误");
    this.async = true;//是否异步
    this.url = null;//请求的URL
    this.type = "get";// get or post
    this.param = null;//参数
    this.callBack = null;//回调函数
    this.data = null;//传递给回调函数的参数,没有则为NULL
    this.Timer = null;
    this.complete = false;
    this.currentUrl = "";//当前页面的URL,登陆后跳转
    var _xmlHttp ;
    var msXmlHttp = new Array(
                'Msxml2.XMLHTTP.5.0',
                'Msxml2.XMLHTTP.4.0',
                'Msxml2.XMLHTTP.3.0',
                'Msxml2.XMLHTTP',
                'Microsoft.XMLHTTP');
    for(var i = 0; i < msXmlHttp.length; i++)
    {
        try{
            _xmlHttp = new ActiveXObject(msXmlHttp[i]);
        }
        catch (e) {
            _xmlHttp = null;
        }
    }
    if(!_xmlHttp && typeof XMLHttpRequest != "undefined")
        _xmlHttp = new XMLHttpRequest();
    
    this.xmlHttp = _xmlHttp;
    
    this._callback = function (_this,request, callback, data) {
        if(request.readyState == 4) {
            _this.complete = true;
            window.clearInterval(_this.Timer);
            if(request.status != 200)  alert(_this.errorMsg[0]+ "status:" + request.status);
            else {
                var msg = request.responseText;
                switch(msg) {
                    case "ajaxError1":
                        break;
                    case "ajaxError2":
                        break;
                    case "ajaxError3":
                        break;
                    case "unlogin":
                        window.location.href = "../user/Sign-in.aspx" + ( _this.currentUrl == "" ? "" : "?url-redirect-to=" + _this.currentUrl );
                        break;
                    default :
                        callback(request, data);
                        break;
                }                
            }
        }
    }
    
    this.exec = function()
    {
        var _this = this;
        if(_this.url == null)
        {
            alert("请求地址未指定");
            return;
        }
        if(_this.callBack == null)
        {
            alert("回调函数未指定");
            return;
        }
        var isGet = _this.type.toLowerCase() == "get";
        if(isGet)
        {
             _this.url += ((_this.url.indexOf("?") > -1) ? "&" : "?") +_this.param +"&" + Math.random();  
        }
        if(_this.async)
            _this.xmlHttp.onreadystatechange = function() { _this._callback(_this,_this.xmlHttp,_this.callBack,_this.data); };
        if(isGet){
            _this.xmlHttp.open("get",_this.url,_this.async);
            _this.xmlHttp.send(null);
        }
        else{
            _this.xmlHttp.open("post",_this.url,_this.async);
            _this.xmlHttp.setRequestHeader('Content-length', _this.param.length);
            _this.xmlHttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
            _this.xmlHttp.send(_this.param);
        }
        if(_this.async)   {
            _this.complete = false;
            _this._callback(_this,_this.xmlHttp,_this.callBack,_this.data);
            if(!_this.complete){
                _this.Timer = window.setInterval(function() {
                    if(!_this.complete)    _this._callback(_this,_this.xmlHttp,_this.callBack,_this.data);
                    else  window.clearInterval(_this.Timer);},1000);
            }
        }else{
            return this.xmlHttp.responseText;
        }
    }
}

function callAjax(method, callback)
{   
    var objAjax=new MagicAjax();
    var param = "method="+method+"&reserve=1";
    var argLenth = arguments.length;
    if(argLenth>2)
        for(var i = 2; i<argLenth; i++)
            param=param+"&"+arguments[i].name+"="+escape(arguments[i].value);
    objAjax.currentUrl = escape( window.location.href);
    objAjax.url = "ajax.ashx";
    objAjax.param = param;
    objAjax.callBack = callback;
    objAjax.exec();
}

function callAjaxSync(method)
{   
    var objAjax=new MagicAjax();
    var param = "method="+method+"&reserve=1";
    var argLenth = arguments.length;
    if(argLenth>1)
        for(var i = 1; i<argLenth; i++)
            param=param+"&"+arguments[i].name+"="+arguments[i].value;
    objAjax.currentUrl = escape( window.location.href);
    objAjax.url = "ajax.ashx";
    objAjax.param = param;
    objAjax.callBack = function(){};
    objAjax.async=false;
    return objAjax.exec();
}

function Updater(ajaxTemplate, output, callBack)
{	  
    var xmlHttp;
    var param = "AjaxTemplate=" + ajaxTemplate;
	var msXmlHttp = new Array(
                'Msxml2.XMLHTTP.5.0',
                'Msxml2.XMLHTTP.4.0',
                'Msxml2.XMLHTTP.3.0',
                'Msxml2.XMLHTTP',
                'Microsoft.XMLHTTP');
    var argLenth = arguments.length;
    
    var divOutput = document.getElementById(output);
    
    if(argLenth > 3)
    {
        for(var i = 3; i < argLenth; i++)
        {
            param = param + "&" + arguments[i].name + "=" + arguments[i].value;
        }
    }
                
    for(var i = 0; i < msXmlHttp.length; i++)
    {
        try
        {
            xmlHttp = new ActiveXObject(msXmlHttp[i]);
            if(xmlHttp!=null) break;
        }
        catch (e) 
        {
            xmlHttp = null;
        }
    }
    if(!xmlHttp && typeof XMLHttpRequest != "undefined")
    {
        xmlHttp = new XMLHttpRequest();
    }
    
    if(callBack == null)
    { 
        xmlHttp.onreadystatechange = function(){ UpdaterCallback(xmlHttp, divOutput);};
    }
    else
    {
        xmlHttp.onreadystatechange = callBack;
    }
    
    xmlHttp.open("post","/AjaxHelper/AjaxHelper.aspx",true);
    xmlHttp.setRequestHeader('Content-length', param.length);
    xmlHttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
    xmlHttp.setRequestHeader('Connection', 'close');
    xmlHttp.send(param);            
}

function UpdaterCallback(http,output)
{
    if(http.readyState == 4) 
    {
        if(http.status != 200)
        {  
            output.innerHTML = "Error:" + http.status + http.responseText;
        }
        else if(output!= null)
        {
            var s = http.responseText;
            
            //set_innerHTML(output, s, null);
            output.innerHTML = s;
            
            //execInnerScript(s);     
        }
    }
}

function UpdaterNonText(ajaxTemplate)
{	  
    var xmlHttp;
    var param = "AjaxTemplate=" + ajaxTemplate;
	var msXmlHttp = new Array(
                'Msxml2.XMLHTTP.5.0',
                'Msxml2.XMLHTTP.4.0',
                'Msxml2.XMLHTTP.3.0',
                'Msxml2.XMLHTTP',
                'Microsoft.XMLHTTP');
    var argLenth = arguments.length;
    
    if(argLenth > 1)
    {
        for(var i = 1; i < argLenth; i++)
        {
            param = param + "&" + arguments[i].name + "=" + arguments[i].value;
        }
    }
                
    for(var i = 0; i < msXmlHttp.length; i++)
    {
        try
        {
            xmlHttp = new ActiveXObject(msXmlHttp[i]);
            if(xmlHttp!=null) break;
        }
        catch (e) 
        {
            xmlHttp = null;
        }
    }
    if(!xmlHttp && typeof XMLHttpRequest != "undefined")
    {
        xmlHttp = new XMLHttpRequest();
    }
    
    xmlHttp.onreadystatechange = function(){};
    
    xmlHttp.open("post","/AjaxHelper/AjaxHelper.aspx",true);
    xmlHttp.setRequestHeader('Content-length', param.length);
    xmlHttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
    xmlHttp.setRequestHeader('Connection', 'close');
    xmlHttp.send(param);            
}

//执行innerHTML里面的javascript
function execInnerScript(innerhtml)
{  
  var temp=innerhtml.replace(/\n|\r/g,"");
  var regex=/<script.+?<\/script>/gi;
  var arr=temp.match(regex);  
  if(arr)
  {    
    for(var iiiiiiiiii_iii=0;iiiiiiiiii_iii<arr.length;iiiiiiiiii_iii++)
    {      
      var temp1=arr[iiiiiiiiii_iii];      
      var reg=new RegExp("^<script(.+?)>(.+)<\/script>$","gi");
      reg.test(temp1);                  
      eval(RegExp.$2);            
    }
  }  
}