done fail then
done() or .fail() callbacks, or they can return another observable object (Deferred, Promise, etc) which will pass its resolved / rejected status and values to ... ,.done（）和.fail（）： .ajax（）。done（function（data，textStatus，jqXHR）}）;替換jQuery 1.8中不推薦使用的方法.success（）。這是上面成功回調函數的替代構造。
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 done fail then 相關參考資料
deferred.then 和deferred.done.fail 的不同_百度知道
then()和done().fail().process()的差别是then: function( /* fnDone, fnFail, fnProgress */ )会生成一个新的deferred，return jQuery.Deferred(function( newDefer )。 https://zhidao.baidu.com deferred.then() | jQuery API Documentation
done() or .fail() callbacks, or they can return another observable object (Deferred, Promise, etc) which will pass its resolved / rejected status and values to ... https://api.jquery.com jQuery - jQuery ajax（）成功，錯誤VS .done（）,. fail（） - RIP Tutorial
.done（）和.fail（）： .ajax（）。done（function（data，textStatus，jqXHR）}）;替換jQuery 1.8中不推薦使用的方法.success（）。這是上面成功回調函數的替代構造。 https://riptutorial.com jQuery AJAX:.done(), .fail(), .always(), and .then()
jQuery AJAX:.done(), .fail(), .always(), and .then(). 0. design November 6, 2019, 4:20pm #1. Versus . succes (), . error (). Many functions! https://www.freecodecamp.org jQuery deferreds and promises - .then() vs .done() - Stack ...
The callbacks attached to done() will be fired when the deferred is resolved. The callbacks attached to fail() will be fired when the deferred is rejected. Prior to ... https://stackoverflow.com Jquery中的done() fail() then() - 博客园
所以新的写法如下： $.ajax("test.html") .done(function() alert("哈哈，成功了！"); }) .fail(function() alert("出错啦！"); }); 可以有多个done，按照顺序 ... https://www.cnblogs.com Jquery中的done() fail() then() - 腾讯云
所以新的写法如下： $.ajax("test.html") .done(function() alert("哈哈，成功了！"); }) .fail(function() alert("出错啦！"); });. 可以有多个done，按照顺序 ... https://cloud.tencent.com Should I use .done() and .fail() for new jQuery AJAX code ...
x in our old existing application , then we will use .done,.fail instead of success,error as JQuery up gradation is going to be deprecated these ... https://stackoverflow.com When to use .then, .done, .fail - Stack Overflow
Methods on a deferred objects (such as can be constructed from a jQuery AJAX request) are executed in relation to that particular deferred. https://stackoverflow.com 大白话讲解Promise（三）搞懂jquery中的Promise - 吕大豹- 博客园
when、done、promise、success、error、fail、then、resolve、reject、always这么多方法不能揉在一起讲，需要把他们捋一捋，哪些是Deferred对象的 ... https://www.cnblogs.com |