How to Run an Angular Project: Step-by-Step Guide

To run an Angular project, first install dependencies with npm install, then start the development server using ng serve. This will compile the project and open it in your browser at http://localhost:4200.

Syntax

Running an Angular project mainly involves two commands:

• npm install: Installs all project dependencies listed in package.json.
• ng serve: Compiles the project and starts a local development server.

The server usually runs on http://localhost:4200 by default.

bash

npm install
ng serve

Output

✔ Browser application bundle generation complete.
✔ Initial Chunk Files | Names         | Raw Size
main.js                 | main          | 1.23 MB

** Angular Live Development Server is listening on localhost:4200, open your browser at http://localhost:4200/ **

Example

This example shows how to run an Angular project from the command line after cloning or creating it.

bash

cd your-angular-project
npm install
ng serve

Output

✔ Browser application bundle generation complete.
✔ Initial Chunk Files | Names         | Raw Size
main.js                 | main          | 1.23 MB

** Angular Live Development Server is listening on localhost:4200, open your browser at http://localhost:4200/ **

Common Pitfalls

Common mistakes when running an Angular project include:

• Not running npm install first, causing missing dependencies errors.
• Trying to run ng serve without Angular CLI installed globally or locally.
• Port 4200 already in use, causing the server to fail to start.

To fix port conflicts, use ng serve --port 4300 to run on a different port.

bash

ng serve
# If port 4200 is busy, run:
ng serve --port 4300

Quick Reference

Summary tips for running Angular projects:

• Always run npm install before starting.
• Use ng serve to start the development server.
• Open http://localhost:4200 in your browser to see the app.
• Use ng serve --port <number> to change the port if needed.
• Ensure Angular CLI is installed globally with npm install -g @angular/cli if ng command is not found.

Key Takeaways

Run npm install to install all dependencies before starting the project.

Use ng serve to compile and launch the Angular development server.

Access your running app at http://localhost:4200 by default.

Change the port with ng serve --port if 4200 is busy.

Make sure Angular CLI is installed globally if ng command is missing.