Angular Directives

Create custom directives for reusable DOM manipulation and behavior in Angular v20+.

Attribute Directives

Modify the appearance or behavior of an element:

import { Directive, input, effect, inject, ElementRef } from '@angular/core';

@Directive({
  selector: '[appHighlight]',
})
export class HighlightDirective {
  private el = inject(ElementRef<HTMLElement>);
  
  // Input with alias matching selector
  color = input('yellow', { alias: 'appHighlight' });