
 代码如下:
 //javascript Object: ajax Object
//Created By RexLee
function Ajax(url,data){
 this.url=url;
 this.data=data;
 this.browser=(function(){ 
 if(navigator.userAgent.indexOf("MSIE")>0) { 
 return "MSIE";//IE浏览器
 }else{
 return "other";//其他
 }})();
};
Ajax.prototype={
 get:function(){
 var result;
 var xmlhttp;
 if(this.browser=='MSIE'){
 try{
 xmlhttp=new ActiveXObject('microsoft.xmlhttp');
 }catch(e){
 xmlhttp=new ActiveXObject('msxml2.xmlhttp');
 }
 }else{
 xmlhttp=new XMLHttpRequest();
 };
 xmlhttp.onreadystatechange=function(){
 result = xmlhttp.responseText;//闭包,不能采用this.属性
 };
 xmlhttp.open('GET',this.url+'?'+this.data,false);//true无法抓取数据,why?
 xmlhttp.send(null);
 return result;
 },
 post:function(){
 var result;
 var xmlhttp;
 if(this.browser=='MSIE'){
 xmlhttp=new ActiveXObject('microsoft.xmlhttp');
 }else{
 xmlhttp=new XMLHttpRequest();
 };
 xmlhttp.onreadystatechange=function(){
 result = xmlhttp.responseText;//闭包,不能采用this.属性
 };
 xmlhttp.open('POST',this.url,false);//需设为false,否则无法抓取responseText
 xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");//POST中,这句必须
 xmlhttp.send(this.data);
 return result;
 }
};
//var a=new ajax('opp2.js','');
//alert('by GET\\n'+a.get())
//alert('by POST\\n'+a.post());
///////////////////////////////
 
window.onload=function(){
document.getElementById("btn").onclick=function(){
 var p=document.getElementById("t").value;
 var a=new Ajax("phpOOP/getPage.php","page="+p);
 document.getElementById("box").innerHTML=a.get();
 };
}