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Apr 18, 2024 · In Angular, decorators are functions that are used to modify the behavior of classes and their members. They provide a way to add metadata or apply transformations to code elements. In Angular, decorators are extensively used to define components, services, directives, pipes, modules, and more.
In AngularJS, decorators are functions that allow a service, directive, or filter to be modified before it is used. There are four main types of angular decorators: Class decorators, such as @Component and @NgModule. Property decorators for properties inside classes, such as @Input and @Output.
Mar 9, 2023 · In this article, let us learn what is Angular Decorator, Why it is needed, and How to create a custom Angular Decorator. We also learn list of built-in Decorators that Angular Supports.
Decorators. TypeScript introduces decorators feature, metadata expressions similar to Java annotation tags or C# and Swift attributes. ECMAScript does not yet have native support for annotating classes and class members (the feature is in the proposal state), so decorators is an experimental TypeScript feature.
There are many built-in decorators are available in angular. Some of them are as follows: @NgModule to define a module. @Component to define components. @Injectable to define services. @Input and @Output to define properties, etc.
Decorators are a new feature of TypeScript and used throughout the Angular code, but they are nothing to be scared of. With decorators we can configure and customise our classes at design time.
Aug 14, 2020 · What Angular Decorators Do. The whole purpose of Angular decorators is to store metadata about a class, method, or property. When you configure a component, you are providing a metadata for that class that tells Angular that you have a component, and that component has a specific configuration.
