javascript - AngularJS 中的抽象状态

Question

我是 Ionic 框架的新手。我正在使用 ionic 标签。这个选项卡工作正常。

.state('tab', {
    url: '/tab',
    abstract: true,
    templateUrl: 'templates/tabs.html'
  })

我想知道这里abstract的含义。 abstract 是做什么的？如果我设置 abstarct:false 或对此进行评论，那么这也可以正常工作，但没有任何效果。

Answer 1

这是angular-ui-router的功能，但不是ionic的功能。请在这里查看:https://github.com/angular-ui/ui-router/wiki/Nested-States-and-Nested-Views#abstract-states

来自文档:

An abstract state can have child states but can not get activated itself. An 'abstract' state is simply a state that can't be transitioned to. It is activated implicitly when one of its descendants are activated.

Some examples of how you might use an abstract state are:

1. To prepend a url to all child state urls.
2. To provide resolved dependencies via resolve for use by child states.
3. To provide inherited custom data via data for use by child states or an event listener.
4. To run an onEnter or onExit function that may modify the application in someway. 4.Any combination of the above.