2020-02-16 标签:ajax,readystate,五种,状态,详解,pragmatic,a,web,primer,readystae,介绍,摘译,如下,send,method,n,ot

在《Pragmatic Ajax A Web 2.0 Primer 》中对readyStae状态的介绍，摘译如下： 0: (Uninitialized) the send( ) method has not yet been invoked. 1: (Loading) the send( ) met