function AjaxFn(obj){
var ajax = window.XMLHttpRequest ? new XMLHttpRequest (): new ActiveXObject('Microsoft.XMLHTTTP');
var method = obj.method.toUpperCase();
if( obj.dada){
for (var key in dada) {
var str = '';
var str1 = ''
str += str + key + '='+ dada[key] + '&';
}
var str = data.substring( 0 ,length-1);
}
if( method = 'GET'){
obj.url += '?' + str;
}else{
str1 = str;
}
ajax.open(method,obj.url, true );
if(method=='POST'){
ajax.setRequestHeader('Content-type','application/x-www-form-urlencoded');
}
ajax.send(str1);//先不加参数
ajax.onreadystatechange = function (){
if(ajax.readyState== 4){
//网络通
if(ajax.status == 200){
obj.success(ajax.responseXML || ajax.responseText);
}else{
// 如果status
obj.error(ajax.status);
}
}
}
}
