Angular CLI installation and setup - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Angular CLI?

Angular CLI is a command-line tool that helps you create, build, and manage Angular projects easily.

beginner

Which command installs Angular CLI globally on your computer?

You use npm install -g @angular/cli to install Angular CLI globally.

beginner

How do you create a new Angular project using Angular CLI?

Run ng new project-name to create a new Angular project with the CLI.

beginner

What command starts the Angular development server?

Use ng serve to start the development server and see your app in the browser.

beginner

Why is it important to install Angular CLI globally?

Installing Angular CLI globally lets you run Angular commands from any folder on your computer.

Which command installs Angular CLI globally?

A npm install -g @angular/cli

B ng new

C npm start

D ng serve

The command npm install -g @angular/cli installs Angular CLI globally.

What does the command ng new my-app do?

A Creates a new Angular project named 'my-app'

B Installs Angular CLI

C Starts the Angular server

D Builds the Angular project

The ng new my-app command creates a new Angular project folder called 'my-app'.

Which command runs the Angular app in the browser during development?

A ng build

B npm install

C ng test

D ng serve

The ng serve command starts a local server and opens the app in the browser.

Why do we use Angular CLI instead of manually setting up Angular?

A It slows down development

B It automatically creates and manages project files

C It only works on Windows

D It replaces the need for a code editor

Angular CLI automates setup and management, making development faster and easier.

After installing Angular CLI globally, where can you run Angular commands?

A Only in the browser console

B Only inside Angular project folders

C Anywhere on your computer

D Only in the Node.js folder

Global installation allows running Angular CLI commands from any folder.

Explain the steps to install Angular CLI and create a new Angular project.

Think about commands you type in the terminal from start to running the app.

Why is Angular CLI helpful for beginners learning Angular?

Consider how a tool can make learning and working easier.

Practice

1. What is the main purpose of the Angular CLI tool?

easy

A. To create and manage Angular projects easily

B. To write Angular component code manually

C. To deploy Angular apps to the server automatically

D. To replace the need for Node.js in Angular development

Solution

1. Step 1: Understand Angular CLI role

   Angular CLI is a command-line tool that helps create and manage Angular projects quickly.

2. Step 2: Compare options

   Only To create and manage Angular projects easily correctly describes this purpose. Writing code manually or deployment are not CLI's main roles.

3. Final Answer:

   To create and manage Angular projects easily -> Option A

4. Quick Check:

   Angular CLI = project creation and management [OK]

Hint: Angular CLI helps start projects fast [OK]

Common Mistakes:

• Thinking CLI writes code for you
• Confusing CLI with deployment tools
• Assuming CLI replaces Node.js

2. Which command correctly installs Angular CLI globally using npm?

easy

A. npm install @angular/cli

B. npm install -g @angular/cli

C. ng install -g @angular/cli

D. npm global install angular-cli

Solution

1. Step 1: Recall npm global install syntax

   The correct syntax to install a package globally is npm install -g package-name.

2. Step 2: Match Angular CLI package name

   The official package name is @angular/cli, so the full command is npm install -g @angular/cli.

3. Final Answer:

   npm install -g @angular/cli -> Option B

4. Quick Check:

   Global install = npm install -g [OK]

Hint: Use npm install -g for global packages [OK]

Common Mistakes:

• Omitting the -g flag for global install
• Using ng install instead of npm install
• Wrong package name or missing @angular prefix

3. After installing Angular CLI globally, what command creates a new Angular project named my-app?

medium

A. ng create my-app

B. npm new my-app

C. ng generate project my-app

D. ng new my-app

Solution

1. Step 1: Identify Angular CLI command for new projects

   The Angular CLI uses ng new to create new projects.

2. Step 2: Check command syntax

   The correct syntax is ng new project-name, so ng new my-app is correct.

3. Final Answer:

   ng new my-app -> Option D

4. Quick Check:

   New project = ng new [OK]

Hint: Use ng new to create projects [OK]

Common Mistakes:

• Using ng create instead of ng new
• Trying npm new which doesn't exist
• Using ng generate project incorrectly

4. You run ng serve but get an error saying command not found. What is the most likely cause?

medium

A. Angular CLI is not installed globally

B. You forgot to create a new project first

C. You need to run npm start instead

D. Your Node.js version is too new

Solution

1. Step 1: Understand ng serve command

   ng serve runs the Angular development server and requires Angular CLI installed globally or locally.

2. Step 2: Analyze error cause

   If the command is not found, it usually means Angular CLI is not installed globally or not in PATH.

3. Final Answer:

   Angular CLI is not installed globally -> Option A

4. Quick Check:

   ng serve error = missing global CLI [OK]

Hint: Check if Angular CLI is installed globally [OK]

Common Mistakes:

• Assuming npm start replaces ng serve
• Ignoring CLI installation errors
• Blaming Node.js version without checking CLI

5. You want to create a new Angular project with routing enabled and SCSS styling using Angular CLI. Which command should you run?

hard

A. ng create my-app --routing --style=scss

B. ng new my-app -routing -style=scss

C. ng new my-app --routing --style=scss

D. ng generate project my-app --routing --style=scss

Solution

1. Step 1: Recall correct command for new project with options

   The Angular CLI uses ng new with flags like --routing and --style=scss to enable routing and SCSS styling.

2. Step 2: Verify option syntax

   Options must use double dashes and equal sign for style. So ng new my-app --routing --style=scss is correct.

3. Final Answer:

   ng new my-app --routing --style=scss -> Option C

4. Quick Check:

   New project with routing and SCSS = ng new with flags [OK]

Hint: Use ng new with --routing and --style flags [OK]

Common Mistakes:

• Using ng create instead of ng new
• Using single dash for options
• Wrong option syntax like -routing