JavaScript: Zero to Junior
Master the most popular web programming language by building real projects.
Level
Beginner
Lessons
152
Certificate
Included
Curriculum
A step-by-step path from basics to a professional portfolio. Complete lessons and track progress.
JavaScript Basics
What JS is, how it works, and why it is needed. First steps in programming.
Data Types and Operators
Numbers, strings, logic. Learning to work with information.
Control Flow
if, else, switch, and loops. Teaching the program to make decisions.
Functions and Scope
Functions are the building blocks of a program.
Objects and Arrays
Core data structures for storing collections and complex entities.
Working with the DOM
Bringing HTML pages to life. Learning to control elements through JavaScript.
Events
Clicks, scrolling, text input. How to react to user actions.
Asynchronous JavaScript
Timers, promises, and APIs. Executing actions in the background.
Prototypes and Inheritance
A deep understanding of how objects are structured in JavaScript.
Classes and Modules
Organizing code with modern class syntax and ES module imports.
Working with APIs
Communicating with servers, fetching and sending data.
Error Handling
How to make your program stable and prevent it from crashing on errors.