<?php $callback = $_GET[‘callback‘ ]; echo "{$callback}({‘msg‘:‘this is a jquery jsonp test message!‘})"; ?>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>使用JavaScript实现跨域请求</title> <script type="text/javascript"> var scriptElement = document.createElement("script"); scriptElement.src = "http://zhangzhanyu.nfreehost.com/jsonp.php?callback=callback"; document.head.appendChild(scriptElement); function callback(jsonString) { //var data = JSON.parse(jsonString); alert(jsonString.msg); } </script> </head> <body> </body> </html>
原文：http://www.cnblogs.com/yugege/p/5167864.html