Skip to Content
Enduring CSS
book

Enduring CSS

by Ben Frain
January 2017
Intermediate to advanced
134 pages
2h 28m
English
Packt Publishing
Content preview from Enduring CSS

Browser representatives on CSS performance

While I generally never worry CSS selectors when authoring a style sheet (typically I just put a class on anything I want to style and select it directly) every so often I see comments from people way smarter than me that relate specifically to a certain selector. Here's a quote from Paul Irish (https://www.paulirish.com/) in relation to a post on A List Apart from Heydon Pickering (http://alistapart.com/article/quantity-queries-for-css) which used a specific type of selector:

These selectors are among the slowest possible. ~500 slower than something wild like div.box:not(:empty):last-of-type .title”. Test page http://jsbin.com/gozula/1/quiet That said, selector speed is rarely a concern, but if this ...

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

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’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.
Head of Cybersecurity
QuotationMarkI 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.
Field Engineer
QuotationMarkI’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.
Data Platform Tech Lead
QuotationMarkI'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.
Mark W.
Embedded Software Engineer

You might also like

Jump Start Sass

Jump Start Sass

Hugo Giraudel, Miriam Suzanne
CSS Secrets

CSS Secrets

Lea Verou
CSS Grid Layout: 5 Practical Projects

CSS Grid Layout: 5 Practical Projects

Craig Buckler, Ilya Bodrov-Krukowski, Giulio Mainardi, Ahmed Bouchefra, Diego Souza

Publisher Resources

ISBN: 9781787282803