问题描述
从jQuery 1.5开始，所有jQuery的AJAX方法都返回一个jqXHR对象，该对象提供.error()，.success()和.complete()方法.
As of jQuery 1.5, all jQuery's AJAX methods return a jqXHR object that provides .error(), .success(), and .complete() methods.
.success()和.complete()有什么区别?
推荐答案
.success()仅在您的Web服务器使用200 OK HTTP标头响应时才被调用-基本上一切正常.
.success() only gets called if your webserver responds with a 200 OK HTTP header - basically when everything is fine.
但是，无论ajax调用是否成功，.complete()都会始终被调用-也许它输出了错误并返回了错误-.complete()仍将被调用.
However, .complete() will always get called no matter if the ajax call was successful or not - maybe it outputted errors and returned an error - .complete() will still get called.
值得一提的是，.complete()在被调用后会被称为 .success()在被调用之后-对您而言很重要.
It's worth mentioning that .complete() will get called after .success() gets called - if it matters to you.
- http://api.jquery.com/ajaxComplete/
- http://api.jquery.com/ajaxSuccess/
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