JavaScript

The language of the web — and now of servers, apps and everything in between. Closures, promises and the event loop made clear.

beginner~30 hours16 topics~29h of lessonsRoadmap Level 1

Every CS skill sits on top of writing and reading code fluently in at least one language.

Learning Path
07 stages
16 topics · 7 stages0/16 completed
01

Fundamentals

Start from zero. Build the vocabulary.

JavaScript Basics~60 minbeginnerFunctions and Arrow Functions~60 minbeginnerArrays and Objects~75 minbeginner
02

Core Concepts

The ideas you cannot skip.

DOM Manipulation~90 minbeginnerClosures and Scope~75 minintermediateAsynchronous JavaScript: callbacks, promises, async/await~120 minintermediate
03

Intermediate

Connect ideas and go deeper.

Classes and Prototypes~60 minintermediateModules and Modern ES Features~60 minintermediatethis, call, apply, bind~60 minintermediate
04

Advanced

Beyond the basics.

Event Loop, Microtasks and Concurrency~75 minadvancedError Handling and Debugging~45 minintermediate
05

Practice

Solve problems until it sticks.

Practice Set: Language Core~120 minbeginnerPractice Set: Async & DOM~120 minintermediate
06

Projects

Apply everything in real work.

Project: Weather Widget~300 minintermediateProject: Notes App with localStorage~300 minintermediate
07

Interview Prep

Convert knowledge into offers.

JavaScript Interview Questions~90 minadvanced