jquery ajax跨域

跨域案例下载：https://sdeno.com/?p=4815

JSONP是一个非官方的协议，它允许在服务器端集成Script tags返回至客户端，通过javascript callback的形式实现跨域访问

方法一： jsonp之 getJSON

js

var url = "http://localhost/mytest/jsonp_php.php?callback=?";
$.getJSON(url, {
 "age": 21,
 "name": "kitty"
}, function (data) {
 alert("name:" + data.name + ", age:" + data.age);
});

php

<?php 
 $age=$_GET["age"];
 $name=$_GET["name"];
 $jsondata = "{age:$age, name:'$name'}"; 
 echo $_GET['callback'].'('.$jsondata.')'; 
?>

关于jquery $.getJSON()跨域请求一些细节：https://sdeno.com/?p=3247

二jsonp之$.ajax

js

$.ajax({
 type: 'GET',
 url: 'http://localhost/mytest/jsonp_php.php',
 dataType: "jsonp",
 jsonp: "callback5",
 jsonpCallback:"flightHandler",
 data: {
 "age": 21,
 "name": "kitty"
 },
 success: function (data) {
 alert("name:" + data.sd + ", age:" + data.aa)
 }
 })

php

<?php 
 $age=$_GET["age"];
 $name=$_GET["name"];
 $ary=array("sd"=>"sdfg","aa"=>23);
 $jsondata=json_encode($ary);
 echo $_GET['callback5'].'('.$jsondata.')'; 
?>

http://www.cnblogs.com/breakdown/archive/2012/04/27/2473586.html