EXT由于其可以用很少的代码做出很精美网页界面，现在越来越普及。这里是一个EXT与JS结合使用的一个登陆以及验证用户信息的网页应用代码。-EXT because of its small code can be used to make very fine web interface, is now becoming increasingly popular. Here is a EXT JS conjunction with a landing page and verify the user