My 5th book "50 Tips on JavaScript" is on sale. Go get it from https://50tips.dev.
Illustrated guide to 50 of the most interesting JavaScript topics.

Speed Up Your JavaScript

As an interpreted language, JavaScript is filled with hidden performance issues that conspire to slow down your code and ruin the user experience. Learn exactly what is fast, what is slow, and what you can do to squeeze that last bit of performance out of your JavaScript code.
Nicholas C. Zakas is the author of Professional JavaScript for Web Developers, 2nd Edition (Wrox, 2009), co-author of Professional Ajax, 2nd Edition (Wrox, 2007), and a contributor to Even Faster Web Sites (O'Reilly, 2009). Nicholas is principal front end engineer for the Yahoo! homepage and is also a contributor to the Yahoo! User Interface (YUI) library.
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