JavaScript360.org
Everything you need to ace your upcoming JavaScript interview.
Still telling yourself you'll get to Data Structures later?
Later is usually the interview. It's the one round you can't bluff — and the one most devs quietly keep putting off. 200 problems, video walkthroughs built right in, your progress saved as you go.
Striver's SDE Sheet
Top coding interview problems, organized day by day — track what you've solved as you go.
Watch without leaving the page
Every walkthrough plays right there in the sheet's own player — seek, speed, fullscreen — no tab-switching to YouTube and back.
Pick up where you left off
A persistent player bar tracks the problem you're on across every page — saved in your browser, no account needed.
The whole sheet, day by day
All 200 problems in Striver's own order, grouped by day, with a checkbox and a live progress bar for each one.
Read the write-up too
A separate button on every problem opens its article — this site's own where we have one, TakeUForward's otherwise.
JavaScript Deep Dive
A guided, ground-up JavaScript course for developers who want to actually understand the language — not just copy-paste their way through it. Work through it in order and you'll go from "what is a value?" to shipping your own tiny interpreter, a platform game, and a full-stack app.
Fundamentals to full-stack
Start at values and operators, and work up through closures, prototypes, async code, and Node.js — nothing assumed, nothing skipped.
Build real things, not just read
Five hands-on projects — a delivery robot, a tiny programming language, a platform game, a pixel art editor, and a full-stack app.
Progress you can actually see
Check off chapters as you finish them and watch a real progress bar fill up — saved locally, so you always know where you left off.
A certificate when you finish
Complete all 22 chapters and unlock a downloadable certificate of completion — proof you put in the work.
Designed for Javascript developers
This website includes premium quality of javascript content for software engineers of all levels. Whether you want to refresh your knowledge or start over, JavaScript360.org has got you covered.
Master Javascript skills
The aim is to build your understanding of Javascript piece by piece, from core principles like variables, data types, conditionals, and functions through advanced topics including loops, and DOM scripting.
Support high quality editorials
JavaScript360.org can be extended while reusing the same header and footer. Feel free to add new resources/note/tutorials/courses.
Explore the community