Learning path

JavaScript

Learn JavaScript by topic: concise explanations and practical examples come first, followed by structured exercises organized by track and level.

2 tracks 6 levels 43 topics 400 exercises

Track 01

Syntax

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29 topics · 330 exercises

Beginner

13 topics · 170 exercises

Conditions 15 tasks Conditions 2 11 tasks String Methods 10 tasks while loop 14 tasks For loop and arrays 15 tasks Functions 10 tasks Functions Level 2 20 tasks Functions Level 3 15 tasks OOP Basics 11 tasks OOP: Inheritance and Method Overriding 9 tasks OOP, objects, algorithmic thinking 15 tasks Set, objects, error handling 15 tasks Working with files: reading and writing 10 tasks

Intermediate

9 topics · 90 exercises

Array methods: map, filter, reduce 10 tasks Destructuring and spread 10 tasks Arrow Functions & this 10 tasks Closures 10 tasks Promises and async/await 10 tasks Regular expressions 10 tasks JSON and Date 10 tasks Custom errors and error handling 10 tasks Map 10 tasks

Advanced

7 topics · 70 exercises

Iterators and generators 10 tasks Modules 10 tasks The event loop 10 tasks Design patterns 10 tasks Closures and Scope 10 tasks Error Handling 10 tasks Testing in JavaScript 10 tasks

Track 02

API

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14 topics · 70 exercises

Beginner

6 topics · 30 exercises

Your First Request 5 tasks Query Parameters 5 tasks Working with Categories 5 tasks Pagination 5 tasks Headers and the Echo Endpoint 5 tasks Redirects 5 tasks

Intermediate

5 topics · 25 exercises

Token Authentication 5 tasks JWT Authentication 5 tasks Shopping Cart 5 tasks Orders 5 tasks User Profile 5 tasks

Advanced

3 topics · 15 exercises

API Client Class 5 tasks Error Handling 5 tasks Parallel Requests with Promise.all 5 tasks