Angular Cheat Sheet for Beginners (Quick Revision Guide)

If you're learning Angular or preparing for interviews, remembering everything can feel overwhelming.

So here’s a simple, quick, and practical Angular Cheat Sheet to help you revise faster

What is Angular?

Angular is a frontend framework used to build dynamic, scalable web applications using TypeScript.

1. Component (Basic Building Block)

Every Angular app is built using components.

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

@Component({
selector: 'app-root',
template: <h1>Hello Angular</h1>
})
export class AppComponent {}

2. Directives

Directives help you control the DOM.

• *ngIf → Conditional rendering
• *ngFor → Loop through data

Welcome User

{{ item }}

3. Data Binding

Angular supports multiple types of data binding:

• Interpolation → {{ data }}
• Property Binding → [value]="data"
• Event Binding → (click)="handleClick()"
• Two-way Binding → [(ngModel)]="data"

4. Services & Dependency Injection

Used to share data and logic across components.

@Injectable()
export class DataService {
getData() {
return ["Angular", "React", "Vue"];
}
}

5. Routing

Used for navigation between pages.

const routes: Routes = [
{ path: 'home', component: HomeComponent }
];

6. Lifecycle Hooks

Important hooks you should know:

• ngOnInit() → Runs when component loads
• ngOnDestroy() → Cleanup logic

ngOnInit() {
console.log("Component Loaded");
}

7. Forms

Two types of forms:

• Template-driven forms
• Reactive forms

this.form = new FormGroup({
name: new FormControl('')
});

8. Angular CLI Commands

ng new my-app
ng serve
ng generate component my-component
ng build

This cheat sheet is perfect for:

• Quick revision
• Interview preparation
• Daily Angular development

Bookmark this for later and keep building!

Want to Learn More?

Check out more tutorials, MCQs, and coding practice on:
👉 https://www.quipoin.com/tutorial/angular