By Alex Knol
Layout, keep an eye on, and deal with your dependencies with AngularJS dependency injection
Dependency injection allows higher checking out by means of permitting us to mock dependencies in checking out environments in order that we merely try out something at a time. It additionally allows us to jot down extra maintainable code through decoupling our items from their implementations. the inducement for utilizing it in AngularJS is to show you how to transparently load mocked items in tests.
This e-book is a pragmatic guide to get you all started on dependency injection. it's going to additionally take you alongside the line to making testable and reusable code. making sure productiveness and balance are the 2 most crucial issues that you'll learn.
"Dependency Injection with AngularJS" will introduce you to AngularJS utilizing an easy pattern venture. through portraying other ways of constructing code modules, it is going to convey you some great benefits of dependency injection. this can result in the facility to create reusable elements that may simply be proven.
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Lastly, we created a method for creating and persisting an object by the save method. That's all we need for now, but we can freely extend the functionality if we need to. As you can see, we have wrapped the native Parse methods with our own methods. This means that if we should ever want to swap Parse for something else, all we have to change is the service and nothing else. info Better Code First of all, the Parse-specific code has been centralized and is extracted from the controllers. We can very easily use the reading service in many more classes with minimal lines of code.
Com/angular/ protractor and all the linked documentation in that page. At the time of writing this book, Protractor is still very much in development, but the Angular team has already adopted the framework. Summary In this chapter we have covered some of the reasons behind testing after which we dove right into the testing, starting with unit tests in Jasmine, and then automating them so they are re-run after each file change. Lastly we introduced end-to-end testing with the Angular-specific Protractor test framework.
This will rename $scope and Project to something like a and b. Even Angular will then be unable to resolve the dependencies. There are two ways to solve this problem in Angular. You have seen one of them already, but we will explain it further. You can wrap the function in an array and type the names of the dependencies as strings before the function definition in the order in which you supplied them as arguments to the function. temp = 17; ....... The corresponding order of the strings and the function arguments is significant here.
Dependency Injection with AngularJS by Alex Knol