How to create component and declare component and module in app module in angular10.
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#angular #updateangular #coding #codeplay An NgModule can associate its components with related code, such as services, to form functional units. Every Angular app has a root module, conventionally named AppModule , which provides the bootstrap mechanism that launches the application. An app typically contains many functional modules.
An Angular component is made up of:
Template: A template is a set of HTML elements that tells Angular how to display the component on the page.
Style: A list of CSS style definitions that applies to the HTML elements in the template.
Class: A class that contains logic to control some of what the template renders, through an API of properties and methods
The Angular Root Component
An Angular application must have at least one component, which is the root component and under which other components are nested. The generated application already has a root component bootstrapped for you. That’s why if you run ng serve to run the app, you see elements rendered to the screen. You’ll find the component in src/app/ folder.
You should notice the three constituents of a component, which we talked about. The app.component.css contains the style, app.component.html contains the template, and app.component.ts is the class for the component. Having .component. as part of the file name doesn’t make it a component. It’s a naming convention adopted by the Angular community, which makes it easy to identify what type of file it is.
Open app.component.html to see the content of that file. You should see HTML elements you should be familiar with
NgModules and the Angular Root Module
Angular apps are designed to be modular, and this is achieved through a modularity system called NgModules. NgModules (or Angular modules) is a technique used to build a loosely coupled but highly cohesive system in Angular. A module is a collection of components, services, directives and pipes (I will talk more about pipes and directives later). We use this to group a set of functionality in the app, and can export or import other modules as needed.
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