文章介绍采用异步技术在客户端Web页面上动态显示服务器当前系统时间的方法。在客户端每隔一时间间隔通过XML-HttpRequest对象向服务器发出异步请求,获取并显示服务器系统时钟的当前时间。在服务器端采用异步页面模式由一线程来产生基于系统时钟的当前时间,而接受客户端请求的组件则可直接读出该时间并返回客户端。 This article describes how to use asynchronous technology to dynamically display the current system time on the client’s Web page. The client sends an asynchronous request to the server at an interval of time through the XML-HttpRequest object to get and display the current time of the server’s system clock. On the server side using asynchronous page mode by a thread to generate the current time based on the system clock, and the components that accept the client request can directly read the time and returned to the client.