Web2.0下的Ajax及其应用

传统的网络应用是按照"输入-提交-等待-重新显示"的过程设计的,动辄需要重新刷新全部界面、缺乏互动性、资源浪费严重是其最大的弊端,随着进入web2.0的时代,网络应用需要更好的交互性和更快的响应速度.Ajax异步通讯概念,综合XML、JavaScript、DOM、CSS几大技术的优势,提出无刷新更新页面的概念,不会打断交互流程.在用户和服务器之间加了一个中间层,只有需要从服务器读取新数据时才由Ajax引擎代为向服务器提交请求,按需取数据.Ajax的提出,能够创建更接近桌面应用、更直接、更丰富、更动态的web用户界面.

Ajax and the Application in Web2.0

The tradition way of processing in web applications is designed by the steps of "input-submit-wait-redisplay",which disadvantages are need to refresh the whole interface,lacking of intercommunion,and wasting of resources.The conception of Ajax(Asynchronous communication),integrating XML,JavaScript,DOM,CSS,etc,indicates the way to update page without refresh,and won't disturb users' operations.Ajax adds a mid-layer between user and server called Ajax engine,which can submit the request when need to get data.Ajax can provide web interface more desktop-like,more direct and more abundant.