Angular 6 Interview Questions
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.
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.