Posted On: Feb 22, 2018
Decorator in Angular 2 is a way of adding annotations and it also adds metadata to accessor, class declaration, parameter, method, and property. In Angular v2 and above everything is a class so decorators are used for differentiating the class usage. Decorators are also known as the Meta Data and are generally prefixed with the symbol @. There are different kinds of decorators available in Angular 2 like @directive, @injectable, @NgModule, etc.
Example:
An Angular built-in decorator component
@Component({ selector : 'app-root', template : '<p>Simple Angular Component</p>' })
In the example above class, there is a component decorator if you delete this decorator then the class will become blank.
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