Angular 6 Interview Questions

Angular 6 is basically the sixth version of Angular JS which is a JavaScript framework widely used for building web applications as well as mobile apps in a variety of languages such as JavaScript, HTML, and TypeScript. Angular 6 interview questions are a little bit tough for newcomers. With proper study and updated knowledge, interviews can be cracked easily. Here are some of the most asked and best Angular 6 interview questions and answers which can help the freshers to gain a job in this firm:

Most Frequently Asked Angular 6 Interview Questions And Answers

Import: Import in NgModule which is commonly used to make the declarations that have been already exported of other modules available in the current module.

Declarations: These are basically used for making directives that include both components and pipes. Declarations are derived from the current module which has been made available to other directives in the current module. Selectors of Components, directives or pipes can only be matched against the HTML only in a case when they are declared or imported.

Providers: Providers generally work to make services and values compatible with DI. They are added to the root scope. After this, they are injected into other services or directives.

Angular’s AOT stands for Angular Ahead of Time compiler. The main function ahead of time compiler is to compile the application components as well as their templates before actually compiling the program that is, during the process of building. Those applications which are compiled with the help of AOT are launched at a faster pace than regular applications because of some particular reasons:

They execute immediately without the need of client-side compilation.

AOT enables the templates to be embedded as code within components which removes the need for client-side requests for template files.

Downloading of Angular compiler is not needed.

Both constructors, as well as ngOninit, do the work of initialization of a program (particularly some specific components of the program) in Angular 6. They are different in the following

The new features which came with Angular 6 are as follows :

It comprises added support which is used to create custom elements. The custom elements are totally based on Angular components

It has improvised animations. Angular 6 can easily expose the elements and params compatible with transition matchers.

Bazel has been introduced in Angular 6.

It also supports single line, multiline as well as jsdoc comments.

Angular 6 has compiler-cli which adds resource inlining to ngc.

It now supports TypeScript 2.7 Node 8 is required in Angular 6 as its runtime engine.

Ivy can be explained as the new rendering pipeline and view engine of Angular 6. Its main function is to take the templates and components the user has written in his/her programs and then translate into regular HTML and JavaScript which makes the browser to read it as well as display. It is also considered as the next generation of Angular rendered. Ivy is very small in size but simple as well as fast. Only one file is compiled at a time in Ivy. But, this rendering facility is available in the Beta version to date. The angular team is yet to release the full version.

Angular Bazel and Closure were originally developed for changing the structure of how Angular applications are developed internally at Google with how the external communities do it. Both of these features are in the design phase and will be released soon. The Bazel compiler can be considered as a build system generally used for almost all the software built at Google. The closure is also a compiler which is used for making JavaScript download. It helps Angular 6 to run faster. Closure compiler from JavaScript to a better JavaScript than compiling the program from a source language. Also, it analyzes the code and removes dead code, it exists.

There are plenty of features which have been added to Angular 6 which were not present in Angular 5 which gives a fair reason, why should be it upgraded and used wisely. Some of the new features which were not present in previous versions are as follows:

Angular 6 comprises of angular material design library which allows the users to visualize the structures of trees in a more hierarchical way. These three components are available in both styled as well as unstyled versions.

Angular elements package is fully supported now

New command updates such as ng-update which is used to update the dependencies of the code and ng add which can be used to add application features in the program.