All popular browsers now support a programmable document object model (DOM), and the last few versions of these browsers have added the capability to communicate directly between the client and the server, without a complete postback and round trip.

• 目前所有流行的浏览器现在都支持一个可编程的文件对象模型(DOM)，而且这些浏览器的最近的新版本又加入了新的性能使得客户端和服务器可以直接交流，而不用刷新页面。