Top AngularJS 1 Interview Questions- Essential Preparations for Your Next Job Interview
AngularJS 1 is a powerful JavaScript framework that has been widely used in the development of dynamic web applications. As the demand for skilled AngularJS 1 developers continues to rise, interview questions on this topic have become increasingly important. In this article, we will discuss some common AngularJS 1 interview questions to help you prepare for your next job interview.
Understanding AngularJS 1 Basics
1. What is AngularJS 1?
AngularJS 1 is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML’s syntax to express dynamic content.
2. What are the key features of AngularJS 1?
Some of the key features of AngularJS 1 include two-way data binding, dependency injection, modular design, and a rich set of directives.
3. What is the difference between AngularJS 1 and Angular 2+?
AngularJS 1 is a framework, while Angular 2+ is a platform and framework. Angular 2+ is designed to be more modular and performant, with a different architecture and set of features.
Directives and Expressions
4. What are AngularJS 1 directives?
Directives are special attributes in your HTML that tell AngularJS 1 to attach a behavior to the DOM element.
5. What are some common AngularJS 1 directives?
Common AngularJS 1 directives include ng-model, ng-repeat, ng-show, ng-hide, ng-class, and ng-style.
6. How do you create a custom directive in AngularJS 1?
To create a custom directive in AngularJS 1, you need to define a directive function and then use the directive in your HTML.
Two-Way Data Binding
7. What is two-way data binding in AngularJS 1?
Two-way data binding is a feature that synchronizes data between the model and the view.
8. How does two-way data binding work in AngularJS 1?
Two-way data binding works by watching for changes in the model and updating the view, and vice versa.
Dependency Injection
9. What is dependency injection in AngularJS 1?
Dependency injection is a design pattern that allows for the creation of loosely-coupled code, which is easier to test and maintain.
10. How do you use dependency injection in AngularJS 1?
Dependency injection in AngularJS 1 is done through the use of the `$injector` service.
Controllers and Services
11. What is a controller in AngularJS 1?
A controller is a JavaScript object that holds the logic and data for a view.
12. How do you create a controller in AngularJS 1?
To create a controller in AngularJS 1, you need to define a controller function and then use the controller in your HTML.
13. What is a service in AngularJS 1?
A service is a singleton object that holds the business logic of an application.
14. How do you create a service in AngularJS 1?
To create a service in AngularJS 1, you need to define a service function and then use the service in your controller.
Testing and Debugging
15. What are some common testing strategies for AngularJS 1 applications?
Common testing strategies for AngularJS 1 applications include unit testing, integration testing, and end-to-end testing.
16. What are some popular AngularJS 1 testing frameworks?
Popular AngularJS 1 testing frameworks include AngularJS Testability, Jasmine, and Protractor.
By familiarizing yourself with these AngularJS 1 interview questions, you will be well-prepared to showcase your knowledge and skills to potential employers. Good luck with your interview!
