Exercise 2: Installing Packages and Using Packages with Node.js

Learning Objectives

• install a package using npm
• use package in a Node.js program using require

Prerequisites

• you should have Node.js >= v4 installed
• you should have npm v2 or v3 installed

Instructions

1. Create a directory called my-project
2. Change into that directory using cd my-project
3. Install the my-first-mod
4. Create a file called index.js
5. Use the my-first-mod to add the numbers 3 and 4
6. Use the my-first-mod to have the console print Hello, <your name>!

Hints

• You can use http://npmjs.com to look at the README of a package. A README will often give you information on how to use the package.
• You can use console.log(<string>) to print things to the console with Node.js, where <string> is a set of characters or a variable that contains a set of characters
• You can run a Node.js program by typing node <js-file-name> where js-file-name is the name of a .js file, e.g. index, index.js