Patrick Brosset has been passionate about the Web for more 20 years, has worked on many websites and apps with different technologies, has developed developer tools, and has worked on browsers for 10 years.
Now at Microsoft, Patrick works as a Product Manager and writes documentation, creates demos, gives talks, and writes blog posts about the many Web technologies in Microsoft Edge.
See Patrick’s website for more information, and reach out on Twitter @patrickbrosset or Mastodon @email@example.com.
A deep dive into style recalculations and CSS selector performance
How do browsers actually recalculate styles when webpages change? Can the way you write CSS impact the speed of the recalculation process?
In this talk, we’ll go through the details of how browser engines react to DOM changes and apply styles to the page again. We’ll also take a look at examples and case studies to make things practical. And finally, we’ll review developer tools that will help you investigate style performance bottlenecks.