You Don't Know JS Yet (book series) - 2nd Edition by getify
A book series (2 published editions) on the JS language.
About You Don't Know JS Yet (book series) - 2nd Edition
From the project's README at github.com/getify/You-Dont-Know-JS. Lightly cleaned for readability; for the full source see the upstream repo.
This is a series of books diving deep into the core mechanisms of the JavaScript language.
This edition of the YDKJS(Y) book series is exclusively sponsored by Frontend Masters.
Frontend Masters is the gold standard for top-of-the-line expert training material in frontend-oriented software development. With over 150 courses on all things frontend, this should be your first and only stop for quality video training on HTML, CSS, JS, and related technologies.
I teach all my workshops exclusively through Frontend Masters. If you like this book content, please check out my video training courses.
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 184k | github.com/getify/You-Dont-Know-JS |
| GitHub forks | 34k | github.com/getify/You-Dont-Know-JS |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 12.5 years | since Nov 2013 |
| Last commit | 3 months ago | Feb 15, 2026 |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Ready to self-host You Don't Know JS Yet (book series) - 2nd Edition?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
Similar open-source projects
Projects in our directory that replace the same SaaS or share topics with You Don't Know JS Yet (book series) - 2nd Edition.