ajax请求

function ajax(url, fnOnSucc, fnOnFaild)
{
var oAjax=null;

//1.初始化Ajax对象
if(window.ActiveXObject)
{
oAjax=new ActiveXObject("Msxml2.XMLHTTP")||new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
oAjax=new XMLHttpRequest();
}

//2.建立连接
oAjax.open('get', url, true);

//3.监控请求状态
oAjax.onreadystatechange=function ()
{
//readyState->Ajax对象内部的状态
//status->服务器返回的请求结果
if(oAjax.readyState==4)
{
//alert('请求完成，请求结果是：'+oAjax.status);
//alert(oAjax.responseText);
if(oAjax.status==200)
{
if(fnOnSucc)
{
fnOnSucc(oAjax.responseText);
}
}
else
{
if(fnOnFaild)
{
fnOnFaild(oAjax.status);
}
}
}
//alert(oAjax.readyState);
//alert(typeof oAjax.status);
};

//4.发送请求
oAjax.send();

//5.*清理
//oAjax.onreadystatechange=null;
//oAjax=null;
}

function ajaxPost(url, sData, fnOnSucc, fnOnFaild)
{
var oAjax=null;

//1.初始化Ajax对象
if(window.ActiveXObject)
{
oAjax=new ActiveXObject("Msxml2.XMLHTTP")||new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
oAjax=new XMLHttpRequest();
}

//2.建立连接
oAjax.open('post', url, true);

//3.监控请求状态
oAjax.onreadystatechange=function ()
{
//readyState->Ajax对象内部的状态
//status->服务器返回的请求结果
if(oAjax.readyState==4)
{
//alert('请求完成，请求结果是：'+oAjax.status);
//alert(oAjax.responseText);
if(oAjax.status==200)
{
if(fnOnSucc)
{
fnOnSucc(oAjax.responseText);
}
}
else
{
if(fnOnFaild)
{
fnOnFaild(oAjax.status);
}
}
}
//alert(oAjax.readyState);
//alert(typeof oAjax.status);
};

//4.发送请求
oAjax.setRequestHeader('content-type', 'urlencode');
oAjax.send(sData);

}