With and the addition of W3C Selectors API support via
querySelector and querySelectorAll, Prototype is simply fantastic when
paired with a WebKit Browser such as Safari or Chrome. In fact, I did
some testing with through the Slickspeed test:

and found that not only does Prototype make up the speed gap, it
crushes it, becoming the fastest library in this test. To give you
some hard numbers:

WebKit Browser (Google Chrome, Safari displays similar gains) 195ms 19ms

The only downside is when you revert back to xpath as in IE and
Firefox, the total times becomes more even:

xpath ~180
jQuery ~120
Dojo ~80

Anyway, I just found that interesting, and to give kudos to the
Prototype team for taking advantage of great tech, even though it may
not be very standardized yet.

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