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返回值:Deferred Objectdeferred.state()

V1.7概述

确定一个Deferred对象的当前状态

deferred.state()方法返回一个字符串,代表Deferred对象的当前状态。 Deferred对象可以在三种状态之一:

  • pending: Deferred对象是尚未完成状态 (不是 "rejected" 或 "resolved").
  • resolved:  Deferred对象是在解决状态,这意味着,deferred.resolve() 或者 deferred.resolveWith()被对象访问和doneCallbacks被访问(或在被调用的过程中) 。
  • rejected: Deferred对象是在被拒绝的状态,这意味着,deferred.reject() 或者 deferred.rejectWith() 被对象访问和failCallbacks被访问(或在被调用的过程中) 。

这种方法主要是有用的调试,以确定的,例如,递延是否已经得到解决,即使你打算拒绝它的内部代码。

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