日期:2014-05-16 浏览次数:20639 次
<html>
<head>
<script language="javascript" src="myAJAXlib.js"></script>
<script language="javascript">
function cback(text){
alert(text);
}
</script>
</head>
<body>
<form name="form1">
<input type="button" value="test" onclick="doAjax('libtest.php','param=hello','cback','get','0')">
</body>
</html>
function createREQ(){
	var req=false;
	try{
		req=new XMLHttpRequest();
	   } 
	catch(err1)
	{
	try{
		req=new ActiveXObject("Msxml2.XMLHTTP");
	   }
	catch(err2)
	{
	try{
		req=new ActiveXObject("Microsoft.XMLHTTP");
	   }
	catch(err3)
	   {
		req=false;
	   }
	}
	}
	return req;
}
function requestGET(url,query,req){
	myRand=parseInt(Math.random()*99999);
	req.open("GET",url+'?'+query+'&rand='+myRand,true);
	req.send(null);
}
function requestPOST(url,query,req){
	req.open("POST",url,true);
	req.setRequestHeader('Content-Type','application.x-www-form-urlencoded');
	req.send(query);
}
function doCallback(callback,item){
	eval(callback+'(item)');
}
function doAjax(url,query,callback,reqtype,getxml){
	var myreq=createREQ();
	myreq.onreadystatechange=function(){
		if(myreq.readyState==4){
		if(myreq.status==200){
			var item=myreq.responseText;
			if(getxml==1){
			item=myreq.responseXML;
		}
	doCallback(callback,item);
}
}
}
if(reqtype=='post'){
requestPOST(url,query,myreq);
}
else{
requestGET(url,query,myreq);
}
}<?php
echo "Parameter value was".$param;
?>