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>ngIf with else</h3>
<button (click)="loggedIn = !loggedIn">
{{ loggedIn ? 'Log out' : 'Log in' }}
</button>
<ng-container *ngIf="loggedIn; else loggedOut">
<p>Welcome back, {{ user }}!</p>
</ng-container>
<ng-template #loggedOut>
<p>Please log in to continue.</p>
</ng-template>
<hr>
<h4>ngIf then/else syntax</h4>
<button (click)="hasAccess = !hasAccess">
Toggle Access ({{ hasAccess ? 'granted' : 'denied' }})
</button>
<ng-container *ngIf="hasAccess; then accessTpl; else noAccessTpl"></ng-container>
<ng-template #accessTpl>
<p style="color: seagreen">Access granted.</p>
</ng-template>
<ng-template #noAccessTpl>
<p style="color: crimson">Access denied.</p>
</ng-template>
`
})
export class App {
loggedIn = false;
user = 'Angular User';
hasAccess = true;
}
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 - ngIf else</title>
</head>
<body>
<app-root></app-root>
</body>
</html>