A beautiful Cloud Chamber
I want to build me one of those…
Waiting for Firefox 4
I remember that when I was younger I used to play and fiddle with any new beta that came out.
Back then, when I had a lot more time on my hands and reddit didn’t exist, a new version of an uprising browser named Firefox was releasing in late November, that was Firefox 1.5, codenamed Deerpark.
A few months before the release, an alpha was released, and immedietly I started playing with it, although it was barely usable, the new features and improvements that came with 1.5 were awesome. I felt the same kind of rush that you feel when you know you’re getting a present that you really want.
With the new release of Firefox 4, I feel exactly the same, after almost 5 years of not having that feeling. I’m waiting for a browser to be released in it’s final version. Read the rest of the post…
CSS Efficiency
Considering how much CSS I write on a daily basis, I never wondered what is the fastest way to render the CSS I produce, and what are the costs in CPU and load time.
Chris Coyier did a nice research explaining what are the most fast and efficient selectors in CSS, and I’ll summarize his findings here.
- Right to Left — Browsers read you selectors from right-to-left, i.e. if you have a selector as such:
ul > li a[title="home"]the browser will first look for an elementawith the attribute title equal tohomeand only then check if it’s a descendant of anlitag. - ID’s are the most efficient selectors, universal selectors are the least efficient.
- Tag qualifying (
ul#navigation)is very inefficient, don’t use them. - Descendant selectors (
html body ul li a) are efficiency disaster as Chris puts it.
To read the rest of the article I suggest you visit css-tricks.com, worth the read.
/e.s
