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JavaScript Fundamentals

Learn the language that runs every browser and most of the backend internet. Variables, functions, arrays, objects, async — every lesson is hands-on with real Node.js execution.

beginner15 lessons6 chapters15 graded exercisesJavaScript
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What you’ll be able to do

Chapter by chapter. Every lesson ends in a graded exercise.

  • Getting Started
  • Strings
  • Control Flow
  • Functions
  • Collections
  • Modern Syntax
Taught in JavaScript, graded on a real executor.

Curriculum

6 chapters, 15 lessons. Each lesson is a short read and a graded exercise.

  1. 1Hello, WorldRead · exercise
  2. 2Variables: let and constRead · exercise
  3. 3Numbers and MathRead · exercise