/* 參考 : http://www.w3school.com.cn/xmldom/dom_http.asp *//*
* 獲取ajax對(duì)象
*/function getXmlHttpRequest(){
var xhr =
null;
if(typeof(XMLHttpRequest) != 'undefined'){
xhr =
new XMLHttpRequest();
}
else{
xhr =
new ActiveXObject("Microsoft.XMLHttp");
}
return xhr;
}
/*
* post方式請(qǐng)求
*/function post(url, queryString,fn){
var xhr = getXmlHttpRequest();
xhr.open('post',url,
true);
xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xhr.onreadystatechange=function(){
if(xhr.readyState == 4){
if(xhr.status == 200){
fn.apply(
this,[xhr]);
}
}
};
xhr.send(queryString);
}
/*
* get方式請(qǐng)求
*/function get(url,fn){
var xhr = getXmlHttpRequest();
xhr.open('get',url,
true);
xhr.onreadystatechange=function(){
if(xhr.readyState == 4){
if(xhr.status == 200){
fn.apply(
this,[xhr]);
}
}
};
xhr.send(
null);
}
/*
* 測試
*/post("ajax","",function(xhr){
alert(xhr.responseText);
});