angular.injector(..)。在控制台中调用不返回单例 [英] angular.injector(..).invoke in the console not returning a singleton

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问题描述

脚本:

  app = angular.module('app',[])
$ b b app.factory'MyFactory', - >
val:'Clark Kent'

app.controller'MainCtrl',($ scope,MyFactory) - >
MyFactory.val ='Waldo'
$ scope.myFactory = MyFactory

将这个放在控制台中:

  angular.injector(['ng','app'])invoke ){console.log(MyFactory);})

...而不是 Waldo ,您将获得 Clark Kent !!





检查 plunkr

解决方案

Angular中的服务是单例,


每个注射器一次。



angular.injector

要获取当前的应用程序注入器: angular.element(domElement).injector()



例如:

  angular.element(document.querySelector('html'))。inject function(MyFactory){console.log(MyFactory); })


The script:

app = angular.module('app', [])

app.factory 'MyFactory', ->
  val: 'Clark Kent'

app.controller 'MainCtrl', ($scope, MyFactory) ->
  MyFactory.val = 'Waldo'
  $scope.myFactory = MyFactory

Put this in the console:

angular.injector(['ng','app']).invoke(function(MyFactory) { console.log(MyFactory); })

... and instead of Waldo, you get Clark Kent !!

Why doesn't it return the same object?

Check out the plunkr

解决方案

Services in Angular are singletons in the sense that they are only created once per injector.

angular.injector however creates a new injector function.

To get the current app injector: angular.element(domElement).injector()

For your example:

angular.element(document.querySelector('html')).injector().invoke(function(MyFactory) { console.log(MyFactory); })

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