ViewEncapsulation

enum

Contents

Defines template and style encapsulation options available for Component's Component.

      
      enum ViewEncapsulation {
  Emulated: 0
  Native: 1
  None: 2
  ShadowDom: 3
}

Description

See encapsulation.

Members

Member	Description
`Emulated: 0`	Emulate `Native` scoping of styles by adding an attribute containing surrogate id to the Host Element and pre-processing the style rules provided via styles or styleUrls, and adding the new Host Element attribute to all selectors. This is the default option.
`Native: 1`
`None: 2`	Don't provide any template or style encapsulation.
`ShadowDom: 3`	Use Shadow DOM to encapsulate styles. For the DOM this means using modern Shadow DOM and creating a ShadowRoot for Component's Host Element.

Usage notes

Example

      
      @Component({
  selector: 'my-app',
  template: `
    <h1>Hello World!</h1>
    <span class="red">Shadow DOM Rocks!</span>
  `,
  styles: [`
    :host {
      display: block;
      border: 1px solid black;
    }
    h1 {
      color: blue;
    }
    .red {
      background-color: red;
    }
 
  `],
  encapsulation: ViewEncapsulation.ShadowDom
})
class MyApp {
}