有关跨域（子域）Ajax请求的一个问题

比方说，我有一个从 http://www.example.com/index.html 加载主页。该网页上有JS code，使一个Ajax请求 http://n1.example.com//回音？消息=你好。当响应收到一个div主页上的响应体将被更新。

Let's say I have the main page loaded from http://www.example.com/index.html. On that page there is js code that makes an ajax request to http://n1.example.com//echo?message=hello. When the response is received a div on the main page is updated with the response body.

将在所有流行的浏览器的工作？

Will that work on all popular browsers?

编辑：

显而易见的解决方案是把一个代理在www.example.com和n1.example.com的前面，设置它让每一个请求会的的 http://www.example.com/n1 被代理到 http://n1.example.com/ 。

The obvious solution is to put a proxy in front of www.example.com and n1.example.com and set it so that every request going to a subresource of http://www.example.com/n1 gets proxied to http://n1.example.com/.