No matter how much experience you have with JavaScript,odds are you don’t fully understand the language. As part of the "YouDon’t Know JS" series, this concise yet in-depth guide focuses on newasynchronous features and performance techniques—including Promises,generators, and Web Workers—that let you create sophisticated single-page webapplications and escape callback hell in the process.
Like other books in this series, You Don’t Know JS: Async & Performance dives into trickier parts of the language that many JavaScriptprogrammers simply avoid. Armed with this knowledge, you can become a trueJavaScript master.
With this book you will:
Explore old and new JavaScript methods for handling asynchronous programming
Understand how callbacks let third parties control your program’s execution
Address the "inversion of control" issue with JavaScript Promises
Use generators to express async flow in a sequential, synchronous-looking fashion
Tackle program-level performance with Web Workers, SIMD, and asm.js
Learn valuable resources and techniques for benchmarking and tuning your expressions and statements
