If the asynchronous result you're waiting for comes back, make the DOM changes necessary to display it, and then remember that you processed the result.
如果等待的异步结果返回了，对DOM作必要的修改并显示然后再处理结果。
Ajax, as the Web development community well knows, allows you to make asynchronous auxiliary requests to the server and display the resulting output directly on the Web page (see Figure 4).
Web开发社区的人都知道，Ajax允许向服务器发出异步的辅助请求，并直接在网页中显示结果(如图4所示)。
Updatemessage - display the status message (for example, "Please Wait...") during the asynchronous server validation call.
updatemessage—在异步服务器验证调用期间显示状态消息比如，“Pleasewait…”。
Updatemessage - display the status message (for example, "Please Wait...") during the asynchronous server validation call.
updatemessage—在异步服务器验证调用期间显示状态消息比如，“Pleasewait…”。
应用推荐