March 2010
Intermediate to advanced
229 pages
6h 18m
English
Content preview from High Performance JavaScriptBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Foreword
When High Performance JavaScript was first published in 2010, we were on the cusp of a revolution in JavaScript on the web. Most browsers were still running non-optimized JavaScript interpreters and had done very little to optimize their caches or networking behavior. As a result, the authors of this book got together to compile all the best practices for speeding up both the loading and execution of JavaScript. At the time, the information in this book was the first distillation of JavaScript performance enhancement techniques in the world, and as a result, helped speed up a lot of the web applications you probably use today.
In 2008, Google released the first version of Chrome and promised to focus on performance. Chrome featured an optimized JavaScript engine called V8, and it forever changed the way we thought about JavaScript performance. Suddenly, the core JavaScript language was fast. Really fast. Other browsers soon followed suit and by 2014, every major browser had an optimized JavaScript engine with just-in-time (JIT) compilation.
The improvements in web browsers since 2010 have dramatically changed the performance characteristics of JavaScript and the web as a whole. As such, you may find some of the suggestions in this book yield only a small gain or no gain at all. That’s not to say the advice is bad, just that web browsers have caught up and fixed a lot of the problems that were endemic on the web when this book was first written. The core JavaScript ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.