– You Don’t Know JS – free ebook series about Javascript

This is a series of books diving deep into the core mechanisms of the JavaScript language. The first edition of the series is now complete.

https://github.com/getify/You-Dont-Know-JS

Read online (free!): “Up & Going”,
Read online (free!): “Scope & Closures”,
Read online (free!): “this & Object Prototypes”,
Read online (free!): “Types & Grammar”,
Read online (free!): “Async & Performance”,
Read online (free!): “ES6 & Beyond”,