No matter how much experience you have with JavaScript, odds are you don’t fully understand the language. As part of the You Don’t Know JS series, this compact guide focuses on the new features that will be available to developers in ECMAScript 6, the newest version of the standard on which JavaScript is built. Like other books in this series, You Don’t Know JS: ES6 and Beyond dives into trickier parts of the language that many JavaScript programmers simply avoid. Armed with this knowledge, you can achieve true JavaScript mastery.