Module 1 · 5 chapters

JavaScript Getting Started

Every JavaScript journey starts with the fundamentals. Before loops, functions, or frameworks, you need to understand what JavaScript is, how to declare variables, what types values can have, and how to print results to the console.

Whether you are brand new to programming or coming from another language, this module gives you a solid foundation. Each chapter includes interactive visualizations so you can watch values move through memory instead of only reading about them.

Chapters in this module

Introduction to JavaScriptWhat JavaScript is, where it runs, and the tools you'll use to write and inspect it.
Variables & TypesNamed containers that store values so your program can remember and reuse data.
OperatorsThe symbols that combine and compare values — arithmetic, comparison, logical, and assignment.
Type ConversionHow JavaScript turns values from one type to another — both automatically (coercion) and on purpose.
User InteractionThe simplest ways to get input from and show output to the user: alert, prompt, and confirm.

Start with Introduction to JavaScript