January 2017
Intermediate to advanced
134 pages
2h 28m
English
Content preview from Enduring CSSBecome 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,
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Dealing with CSS performance
At this point I'm happily re-concluding the conclusion arrived at in Appendix 1, CSS Selector Performance - that CSS selectors are rarely a problem with static pages. Plus, attempting to second guess which selector will perform well is probably futile.
However, for large DOMs and dynamic DOMs (e.g. not the odd class toggle, we are talking lots of JavaScript manipulation) it may not be beyond the realms of possibility that CSS selectors could be causing an issue. I can't speak for all of Mozilla, but I think when you're dealing with performance, you want to focus on what's slow. Sometimes that will be selectors; usually it will be other things, says L. David Baron (http://dbaron.org/), of Mozilla (https://www.mozilla.org/en-US/ ...
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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.
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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.