angularjs - Calling angular services globally -

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I have a set of services that represent a backend logic, which is called by different angle controllers.

During the development, however, from the browser JavaScript Console, I want to call these services directly to check these services directly in isolation. How can this be done?

There 

  app.service ('service1', function () {this.sayHello = function () {return "Hello"};});

Now with Javascript Console, 

  app. CoatingToSet service ('service1'). SayHello ()

?

You can get the injector for the module and get the service from: 

  (angular insulator) (['ng', 'muep']). ('Service 1'). SayHello ()

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