W3Schools Tryit Editor

main.ts

index.html

import { bootstrapApplication } from '@angular/platform-browser';
import { Component } from '@angular/core';
import { CommonModule } from '@angular/common';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [CommonModule],
  template: `
    <h3>Directives</h3>
    <p *ngIf="items.length > 0">We have {{ items.length }} items</p>
    <ul>
      <li *ngFor="let item of items">{{ item }}</li>
    </ul>
    <button (click)="toggle()">Toggle Items</button>
  `
})
export class App {
  show = true;
  get items() { return this.show ? ['Angular', 'Components', 'Directives'] : []; }
  toggle() { this.show = !this.show; }
}

bootstrapApplication(App);

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Angular Directives</title>
</head>
<body>
  <app-root></app-root>
</body>
</html>