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What is ViewEncapsulation in Angular?

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01

Understand the problem

Explain style encapsulation modes.

view-encapsulation
02

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03

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ViewEncapsulation controls how component styles are scoped: Emulated (default — Angular adds attributes so styles don't leak), None (global styles), and ShadowDom (native Shadow DOM isolation).

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04

Read the code

Setting the encapsulation mode
import { Component, ViewEncapsulation } from '@angular/core';

@Component({
  selector: 'app-badge',
  standalone: true,
  template: '<span class="badge">New</span>',
  styles: ['.badge { color: crimson; font-weight: 700; }'],
  // Emulated (default) → scoped; None → global; ShadowDom → native isolation
  encapsulation: ViewEncapsulation.Emulated,
})
export class BadgeComponent {}
05

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