Ajax提交

<!--
//xmlhttp和xmldom对象
var DedeXHTTP = null;
var DedeXDOM = null;
var DedeContainer = null;
var DedeShowError = false;
var DedeShowWait = false;
var DedeErrCon = "";
var DedeErrDisplay = "下载数据失败";
var DedeWaitDisplay = "正在下载数据...";

//获取指定ID的元素

function $DE(id) {
    return document.getElementById(id);
}

//gcontainer 是保存下载完成的内容的容器
//mShowError 是否提示错误信息
//DedeShowWait 是否提示等待信息
//mErrCon 服务器返回什么字符串视为错误
//mErrDisplay 发生错误时显示的信息
//mWaitDisplay 等待时提示信息
//默认调用 DedeAjax('divid',false,'','')

function DedeAjax(gcontainer,mShowError,mShowWait,mErrCon,mErrDisplay,mWaitDisplay)
{

    DedeContainer = gcontainer;
    DedeShowError = mShowError;
    DedeShowWait = mShowWait;
    if(mErrCon!="") DedeErrCon = mErrCon;
    if(mErrDisplay!="") DedeErrDisplay = mErrDisplay;
    if(mErrDisplay=="x") DedeErrDisplay = "";
    if(mWaitDisplay!="") DedeWaitDisplay = mWaitDisplay;


    //post或get发送数据的键值对
    this.keys = Array();
    this.values = Array();
    this.keyCount = -1;
    this.sendlang = 'gb2312';

    //请求头类型
    this.rtype = 'text';

    //初始化xmlhttp
    //IE6、IE5
    if(window.ActiveXObject) {
        try { DedeXHTTP = new ActiveXObject("Msxml2.XMLHTTP");} catch (e) { }
        if (DedeXHTTP == null) try { DedeXHTTP = new ActiveXObject("Microsoft.XMLHTTP");} catch (e) { }
    }
    else {
        DedeXHTTP = new XMLHttpRequest();
    }

    //增加一个POST或GET键值对
    this.AddKeyN = function(skey,svalue) {
        if(this.sendlang=='utf-8') this.AddKeyUtf8(skey,svalue);
        else this.AddKey(skey,svalue);
    };
    
    this.AddKey = function(skey,svalue) {
        this.keyCount++;
        this.keys[this.keyCount] = skey;
        svalue = svalue+'';
        if(svalue != '') svalue = svalue.replace(/+/g,'$#$');
        this.values[this.keyCount] = escape(svalue);
    };

    //增加一个POST或GET键值对
    this.AddKeyUtf8 = function(skey,'$#$');
        this.values[this.keyCount] = encodeURI(svalue);
    };

    //增加一个Http请求头键值对
    this.AddHead = function(skey,svalue) {
        this.rkeyCount++;
        this.rkeys[this.rkeyCount] = skey;
        this.rvalues[this.rkeyCount] = svalue;
    };

    //清除当前对象的哈希表参数
    this.ClearSet = function() {
        this.keyCount = -1;
        this.keys = Array();
        this.values = Array();
        this.rkeyCount = -1;
        this.rkeys = Array();
        this.rvalues = Array();
    };


    DedeXHTTP.onreadystatechange = function() {
        //在IE6中不管阻断或异步模式都会执行这个事件的
        if(DedeXHTTP.readyState == 4){
            if(DedeXHTTP.status == 200)
            {
                if(DedeXHTTP.responseText!=DedeErrCon) {
                    DedeContainer.innerHTML = DedeXHTTP.responseText;
                }
                else {
                    if(DedeShowError) DedeContainer.innerHTML = DedeErrDisplay;
                }
                DedeXHTTP = null;
            }
            else { if(DedeShowError) DedeContainer.innerHTML = DedeErrDisplay; }
        }
        else { if(DedeShowWait) DedeContainer.innerHTML = DedeWaitDisplay; }
    };

    //检测阻断模式的状态
    this.BarrageStat = function() {
        if(DedeXHTTP==null) return;
        if(typeof(DedeXHTTP.status)!=undefined && DedeXHTTP.status == 200)
        {
            if(DedeXHTTP.responseText!=DedeErrCon) {
                DedeContainer.innerHTML = DedeXHTTP.responseText;
            }
            else {
                if(DedeShowError) DedeContainer.innerHTML = DedeErrDisplay;
            }
        }
    };

    //发送http请求头
    this.SendHead = function()
    {
        //发送用户自行设定的请求头
        if(this.rkeyCount!=-1)
        { 
            for(var i = 0;i<=this.rkeyCount;i++)
            {
                DedeXHTTP.setRequestHeader(this.rkeys[i],this.rvalues[i]);
            }
        }
        　if(this.rtype=='binary'){
        　DedeXHTTP.setRequestHeader("Content-Type","multipart/form-data");
    }else{
        DedeXHTTP.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    }
};

//用Post方式发送数据
this.SendPost = function(purl) {
    var pdata = "";
    var i=0;
    this.state = 0;
    DedeXHTTP.open("POST",purl,true);
    this.SendHead();
    //post数据
    if(this.keyCount!=-1)
    {
        for(;i<=this.keyCount;i++)
        {
            if(pdata=="") pdata = this.keys[i]+'='+this.values[i];
            else pdata += "&"+this.keys[i]+'='+this.values[i];
        }
    }
    DedeXHTTP.send(pdata);
};

//用GET方式发送数据
this.SendGet = function(purl) {
    var gkey = "";
    var i=0;
    this.state = 0;
    //get参数
    if(this.keyCount!=-1)
    { 
        for(;i<=this.keyCount;i++)
        {
            if(gkey=="") gkey = this.keys[i]+'='+this.values[i];
            else gkey += "&"+this.keys[i]+'='+this.values[i];
        }
        if(purl.indexOf('?')==-1) purl = purl + '?' + gkey;
        else  purl = purl + '&' + gkey;
    }
    DedeXHTTP.open("GET",true);
    this.SendHead();
    DedeXHTTP.send(null);
};

//用GET方式发送数据，阻塞模式
this.SendGet2 = function(purl) {
    var gkey = "";
    var i=0;
    this.state = 0;
    //get参数
    if(this.keyCount!=-1)
    { 
        for(;i<=this.keyCount;i++)
        {
            if(gkey=="") gkey = this.keys[i]+'='+this.values[i];
            else gkey += "&"+this.keys[i]+'='+this.values[i];
        }
        if(purl.indexOf('?')==-1) purl = purl + '?' + gkey;
        else  purl = purl + '&' + gkey;
    }
    DedeXHTTP.open("GET",false);
    this.SendHead();
    DedeXHTTP.send(null);
    //firefox中直接检测XHTTP状态
    this.BarrageStat();
};

//用Post方式发送数据
this.SendPost2 = function(purl) {
    var pdata = "";
    var i=0;
    this.state = 0;
    DedeXHTTP.open("POST",false);
    this.SendHead();
    //post数据
    if(this.keyCount!=-1)
    {
        for(;i<=this.keyCount;i++)
        {
            if(pdata=="") pdata = this.keys[i]+'='+this.values[i];
            else pdata += "&"+this.keys[i]+'='+this.values[i];
        }
    }
    DedeXHTTP.send(pdata);
    //firefox中直接检测XHTTP状态
    this.BarrageStat();
};


} // End Class DedeAjax

//初始化xmldom
function InitXDom() {
    if(DedeXDOM!=null) return;
    var obj = null;
    // Gecko、Mozilla、Firefox
    if (typeof(DOMParser) != "undefined") { 
        var parser = new DOMParser();
        obj = parser.parseFromString(xmlText,"text/xml");
    }
    // IE
    else { 
        try { obj = new ActiveXObject("MSXML2.DOMDocument");} catch (e) { }
        if (obj == null) try { obj = new ActiveXObject("Microsoft.XMLDOM"); } catch (e) { }
    }
    DedeXDOM = obj;
};



//读写cookie函数
function GetCookie(c_name)
{
    if (document.cookie.length > 0)
    {
        c_start = document.cookie.indexOf(c_name + "=")
        if (c_start != -1)
        {
            c_start = c_start + c_name.length + 1;
            c_end   = document.cookie.indexOf(";",c_start);
            if (c_end == -1)
            {
                c_end = document.cookie.length;
            }
            return unescape(document.cookie.substring(c_start,c_end));
        }
    }
    return null
}

function SetCookie(c_name,value,expiredays)
{
    var exdate = new Date();
    exdate.setDate(exdate.getDate() + expiredays);
    document.cookie = c_name + "=" +escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString()); //使设置的有效时间正确。增加toGMTString()
}

-->

用法

<script language="javascript" type="text/javascript">
<!--
function CheckLogin(){
  var taget_obj = document.getElementById('_userlogin');
  myajax = new DedeAjax(taget_obj,'');
  myajax.SendGet2("/member/ajax_loginsta.php");
  DedeXHTTP = null;
}
function AutoScroll(obj){
        $(obj).find("ul:first").animate({
                marginTop:"-22px"
        },500,function(){
                $(this).css({marginTop:"0px"}).find("li:first").appendTo(this);
        });
}
$(document).ready(function(){
setInterval('AutoScroll("#scrollDiv")',3000)
});
-->
</script>