摘要： 在《Pragmatic AjaxA Web 2.0 Primer 》中偶然看到对readyStae状态的介绍，感觉这个介绍很实在，摘译如下：0: (Uninitialized) the send( ) method has not yet been invoked.1: (Loading) the send( ) method has been invoked, request inprogres... 阅读全文