One of my favorite things to do to a browser when a new version is released is to run Slickspeed on it. Slickspeed was made by the great people who made Mootools. Since release, it has been changed, by adding more javascript libraries and a greater real world selector set. I simply used the one from their website.
The results are interesting. Mootools, at one time, was touted as the fastest selector engine. That isn’t true as of Firefox 3 or Chrome on release day. (We’re going to refer to the Chrome on 2008-9-2 as IR, Initial Release. So Chrome IR is Chrome – Initial Release.)
Here is the result. Dojo v1.1.1 was the fastest in Firefox 3, but jQuery 1.2.6 was the fastest in Chrome.
The slowest in browsers were the YUI selector library. The other interesting data, from my limited testing, was that Prototype v1.6.0.2 got slower by about 60 milliseconds.ÂÂ
I recorded my data here, and you can also view my fancy screenshot. The dark blue is the fastest in the set, the pink-ish color is the slowest and the greens are the middle men.
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I wish someone, if possible, would run Slickspeed in Internet Explorer 8 a bunch of times.