Learning JavaScript

Welcome to Learning JavaScript.

This course is a beginner-friendly introduction to JavaScript running in Node. You do not need to know anything about coding before starting.

Each module has two main files:

• README.md: the lesson instructions
• index.js: the JavaScript file you will run and edit

The best way to learn is simple:

1. Open the module folder.
2. Read the README.md.
3. Open index.js.
4. Run the code.
5. Change something small.
6. Run it again and notice what changed.

Table of Contents

1. What you will learn
2. How to use this course
3. How to run a module
4. Modules overview
5. Final project
6. Tips for learning
7. Wrap up

What you will learn

By the end of this course, you will have practiced:

• how to run your first JavaScript program
• how to read the shape of JavaScript code
• how to show messages in the console
• how to store values in variables
• how to work with text
• how to use numbers and simple math
• how to ask the user questions
• how to make decisions
• how to store groups of values and repeat code
• how to build a small interactive story builder
• building a small final project

That is a real foundation.

How to use this course

Start with Module 1 and go in order. Each module builds on the one before it. Try not to rush.

How to run a module

Open the terminal from the learning-javascript folder.

Then run a module like this:

node 01_welcome_to_javascript

For another module, change the folder name.

Modules overview

Module 1: Welcome to JavaScript

You will run your first JavaScript program.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 2: JavaScript Syntax

You will read the shape of JavaScript code.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 3: Printing and Output

You will show messages in the console.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 4: Variables

You will store values in variables.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 5: Strings

You will work with text.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 6: Numbers and Math

You will use numbers and simple math.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 7: Input

You will ask the user questions.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 8: Conditionals

You will make decisions.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Module 9: Arrays and Loops

You will store groups of values and repeat code.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Final Project: Story Builder

You will build a small interactive story builder.

This module focuses on one small idea so you can run it, change it, and understand what happened.

Final project

Final Project: Story Builder

At the end of the course, you will build a small story builder. It asks questions, stores answers, makes a few decisions, and prints a custom story.

Tips for learning

Run the code often. Change one thing at a time. If an error appears, read the line number and check small details first.

Wrap up

This course starts small on purpose. By the end, you build a program that combines input, variables, conditionals, arrays, loops, and functions.