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Usage of ngSwitch

ngSwitch is an attribute directive but not used alone. It is used with 2 of the structural directives -- ngSwitchCase and ngSwitchDefault. Along, these 3 make the implementation of switch-case in Angular.

Practical Examples of [ngSwitch]

Please follow the mentioned steps:

  1. Create a compennt named 'home'
  2. Add the home component in the app.component.html file removing all boilerplate code there.
  3. Add the [ngSwitch] along with *ngSwitchCase and *ngSwitchDefault (1 Attribute directive and 2 Structural Directives) together to implement Switch-Case concept in Angular along with a default value.


<div *ngFor="let x of students" [ngSwitch]="x.country">

    <p style="background:blue;" *ngSwitchCase="'USA'">{{x.name}}, {{x.country}}</p>
    <p style="background:red;" *ngSwitchCase="'UK'">{{x.name}}, {{x.country}}</p>
    <p style="background:gray" *ngSwitchDefault>{{x.name}}, {{x.country}}</p>



import { Component, OnInit } from '@angular/core';

  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
export class HomeComponent implements OnInit {

  students = [
    {name: 'Peter', country: 'USA'},
    {name: 'Lily', country: 'UK'},
    {name: 'Albert',  country: 'China'},
    {name: 'Rosy', country: 'USA'},
    {name: 'Siliva',  country: 'Canada'}

  constructor() { }

  ngOnInit() {

  1. You'll get the following result.

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