Angular 2 Interview Questions For Freshers & Experienced

Angular Vs React. Which one is better?

Pros and Cons of Angular

• Support for web components: Unlike the AngularJS having a closed system for modularizing, Angular2's foundation is basically to lie on the rising web components standard. By this, it is able to use AngularJS directly. Therefore, it does not need any wrapper coding, any component written as a Web Component.
• Component-based architecture: It is the biggest change that shifts AngularJS to Angular 2. Angular 2 supports the components which are the small pieces of the interfaces that are independent of each other. AngularJS took a long time to make HTML elements and requires the developer to reason about directives, controller, etc. But, Angular 2 simplifies this process with reusable UI building blocks known as components, which are easy to test and reuse.
• Reusability: Components that are similar to each other are well encapsulated, simply put, self-sufficient. It helps the developers in reusing them across various parts of an application. It is also beneficially in enterprise-scope applications where various system converges but may possess many similar elements like data pickers, search boxed, sorting lists, etc.
• Faster and Modern Browsers: In modern days, developers demand faster and modern browsers. Developers desire AngularJS 2.0 stress more on browsers like IE10/11, Firefox, Chrome, Safari and Opera on the desktop and Chrome on Android, iOS6, Windows phone 8+ and Firefox mobile. It is believed that this would permit AngularJS codebase to be short and compact. It is able to support the new and great features without bothering about backward compatibility and polyfills. As a result, the AngularJS app development process would be simplified.
• Strong and Flexible Routing: A wide variety of needs and requirements are supported by routing like child and sibling states which bring some features like nested states and sibling views with version 2.0 in the core AngularJS router. There are some great and extensive features like URL resolver, navigation model, hash change, push state child router or location service, etc. which could redo the routing and as a result make it simple, scalable and extensible.

Cons of Angular

• The divided and churning community: In spite of the LTS claims, it is the community around any technology which makes it strong in the market but the Angular community is doubtful. According to the survey, Angular is the second most commonly used technology in the category Frameworks, Libraries, and Other Technologies, which is great.
• Typescript: We know that Angular 2 is written in Typescript, but it has some prerequisites such as knowledge of OOPs. It is quite difficult to handle it if you don't have a good knowledge of OOPs. Some developers have faced this drawback as they have to make more efforts to work on Angular 2.
• Not an update, a change: Angular 2 is known as an updated version of Angular JS, instead, it seems like a new system. It is not easy to get used to Angular 2, because it is not a small release, but a game changer.
• Steep learning curve: In comparison with the other framework like React or Vue, it is difficult to onboard new developers familiar with JavaScript to learn and use the Angular. Another main problem is RxJS which is a reactive programming library for asynchronous programming. It is very important to learn it at least at the basic level.
• Angular is verbose and complex: One of the main disadvantages of the Angular is that it is verbose and complex. This problem can also be seen in the AngularJS which is not even solved in Angular 2. Many developers do complain about the verbosity of the instrument.