Free 
freeCodeCamp
freeCodeCamp
JavaScript Algorithms and Data Structures
freeCodeCamp · free certification
★★★★★4.7(15K reviews)
👥 3.2M learners
🌐 English
Course highlights
| Provider | freeCodeCamp |
| Duration | 300 hours |
| Level | Beginner |
| Mode | Self-paced |
| Language | English |
| Certificate | Yes — shareable certificate |
| Instructor | freeCodeCamp |
| Rating | 4.7★ (15K reviews) |
| Learners | 3.2M |
| Price | Free |
Skills you’ll gain
ES6Regular expressionsData structuresAlgorithmsOOPFunctional programming
Compare with alternatives
Same topic, different trade-offs — here's who runs each one and what it's best at.
| Course | Provider | Rating | Price | Duration | Why pick this one |
|---|---|---|---|---|---|
| JavaScript Algorithms and Data Structures This |
freeCodeCamp
|
4.7★ | Free | 300 hours | Free — and still gives a certificate |
| The Complete JavaScript Course 2026: From Zero to Expert |
 Udemy
|
4.7★ | ₹599 | 69 hours | Highest rated (4.7★ from 233.6K reviews) |
| Modern JavaScript From The Beginning |
Udemy
|
4.7★ | ₹549 | 22 hours | Cheapest paid option (₹549) |
| Learn JavaScript | Codecademy | 4.5★ | Free | 15h | Quickest to finish (15h) |