JavaScript 跨域请求库 XDomain

http://www.oschina.net/p/xdomain
XDomain 是 JavaScript CORS 跨域请求的一个替代产品，无需任何服务器端的配置。只需要在同域下放置一个 proxy.html 文件即可。该库利用 XHook 来获取所有 XHR，可以无缝的和其他库协同工作。

Features
Simple
Library Agnostic
With jQuery  $.ajax (and subsequently $.get, $.post)
With Angular $http service
Cross domain XHR just magically works
No need to modify the server code
No need to use IE's silly XDomainRequest Object
Easy XHR access to file servers:
Amazon
Dropbox
Includes XHook and its features
proxy.html files (slaves) may:
White-list domains
White-list paths using regular expressions (e.g. only allow API calls: /^\/api/)
Highly performant
Seamless integration with FormData


示例代码：

//do some vanilla XHR
var xhr = new XMLHttpRequest();
xhr.open('GET', 'http://xyz.example.com/secret/file.txt');
xhr.onreadystatechange = function(e) {
  if(xhr.readyState === 4)
    alert(xhr.responseText);
};
xhr.send();
 
//or if we are using jQuery...
$.get('http://xyz.example.com/secret/file.txt').done(function(data) {
  console.log("got result: ", data);
});