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About You-Dont-Know-JS
You-Dont-Know-JS
A book series (2 published editions) on the JS language
You Don't Know JS Yet is a book series by Kyle Simpson that dives into the core mechanisms of the JavaScript language. This page is the GitHub repository for the second edition, which is now complete. The books can be read online entirely for free. The recommended reading order starts with Get Started, then Scope & Closures, then the ebook The Unbooks. The Objects & Classes book is listed as a draft that is stable, and Types & Grammar is a rough draft. Sync & Async and ES.Next & Beyond were canceled. The author describes the series as self-published through GetiPub, with the finished books also sold through normal retail sources such as Leanpub and Amazon. The series was written over eleven years, and the project is no longer taking contributions. The content is licensed under Creative Commons Attribution-NonCommercial-NoDerivs 4.0. It suits developers who already write JavaScript and want to understand how the language works underneath.
- Price
- Free
- Made by
- getify
- Category
- Education
- Website
- github.com/getify/you-dont-know-js

