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
1、jsonp之$.ajax
js
$.ajax({ ???????type: ‘GET‘, ???????url: ‘http://localhost/ajax/jsonp.php‘, ???????dataType: "jsonp", ???????jsonp: "callback5", ???????jsonpCallback:"flightHandler", ???????data: { ???????????"age": 21, ???????????"name": "kitty" ???????}, ???????success: function (data) { ???????????alert("name:" + data.sd + ", age:" + data.aa) ???????} ???})php
<?php ????$age=$_GET["age"]; ???$name=$_GET["name"]; ???$ary=array("sd"=>"tom","aa"=>23); ????$jsondata=json_encode($ary); ???echo $_GET[‘callback5‘].‘(‘.$jsondata.‘)‘; ?>2、jsonp之 getJSON
js
var url = "http://localhost/ajax/jsonp.php?callback=?";$.getJSON(url, { ???"age": 21, ???"name": "kitty"}, function (data) { ???alert("name:" + data.name + ", age:" + data.age);});php
$age=$_GET["age"]; ???$name=$_GET["name"]; ???$jsondata = "{age:$age, name:‘$name‘}"; ?????echo $_GET[‘callback‘].‘(‘.$jsondata.‘)‘; jquery ajax跨越
原文地址：http://www.cnblogs.com/xiaobaibubai/p/7804393.html