Lesson 4/100

Tutorials Angular Tutorial

Install Angular CLI

Install Angular CLI: free step-by-step lesson with examples, common mistakes, and interview tips — part of Angular Tutorial on Toolliyo Academy.

8 min read Updated 7/21/2026

On this page

Angular Tutorial · Lesson 4 of 100

Install Angular CLI

Setup & Components → Routing HTTP Rx → State & Perf → Ship & Projects

Setup & Components · 1 — UI · ~6 min · Setup

What is this?

Angular CLI (`ng`) scaffolds apps, generates components, and runs the dev server. Install it once globally or use npx.

Why should you care?

Without the CLI, project setup is slow and inconsistent across the team.

See it live — copy this example

Run examples in an Angular CLI project (ng serve). Prefer standalone components and TypeScript strict mode.

npm install -g @angular/cli
ng version
# or: npx -y @angular/cli@19 version

What happened?

ng version proves CLI and Node are working.
Prefer a current LTS Node for new apps.

Practice next

Install the CLI.
Run ng version.
Fix PATH if ng is not found.
Try ng help generate.
Update npm if installs fail.

Remember

CLI scaffolds and serves. Match CLI major to project. npx avoids global drift.

Team onboarding

New hire clones AngularVerse.

Outcome: Same CLI commands work on day one.

Interview prep for this lesson

Practice these questions aloud after reading—each links to a full structured answer.

Junior PDF Detailed

What is Angular, and how is it different from AngularJS?

ngular is a TypeScript-based open-source front-end web application framework developed by Google for building single-page applications (SPAs). Key Differences: Feature AngularJS (v1.x) Angular (2+) Language JavaScript Ty…

Mid PDF Detailed

Create a feature module with routing:?

ng generate module admin --route admin --module app.module What interviewers expect A clear definition tied to Angular in Angular projects Trade-offs (performance, maintainability, security, cost) When you would and woul…

Junior PDF Detailed

How do you test Angular components? ● Use Angular’s TestBed to create a testing module that declares the component. ● Instantiate the component and its template for testing. ● Test component logic, DOM rendering, event handling, and bindings. ● Use Angular testing utilities like fixture.detectChanges() to update the view. Basic example: beforeEach(async () => {

wait TestBed.configureTestingModule({ declarations: [MyComponent] }).compileComponents(); fixture = TestBed.createComponent(MyComponent); component = fixture.componentInstance; fixture.detectChanges(); }); it('should cre…

Junior PDF Detailed

What is change detection in Angular? Change detection is the mechanism Angular uses to update the DOM when the

pplication's state changes. When data-bound properties change, Angular runs a change detection cycle to check if the view needs updating. It checks component data and updates the UI accordingly. Happens automatically aft…

Junior PDF Detailed

What is the Angular CLI, and how do you use it to create Angular applications?

The Angular CLI (Command Line Interface) is a tool to generate, build, test, and maintain Angular apps efficiently. It automates repetitive tasks and enforces best practices. You can create a new Angular app with: ng new…

All course Q&A Practice exams

Questions on this lesson 0

Sign in to ask a question or upvote helpful answers.

No questions yet — be the first to ask!

Toolliyo Assistant

Ask about tutorials, ebooks, training, pricing, mentor services, and support. I use public site content only—not admin or internal tools.

care@toolliyo.com