If you want some more detail (and have Firefox with Firebug 1.0 Beta
installed), you can head on over to
http://aheimlich.freepgs.com/tests/jquery/speed-test-firebug/ where I
replicated Karl's tests using Firebug 1.0 Beta's script profiling abilities.
The results aren't much different from Karl's, but there's still some
interesting stuff there like:
$(.dialog) does 815 function calls (!!!!)
$('#speech28') does 6 function calls
On 12/18/06, Karl Swedberg <[EMAIL PROTECTED]> wrote:
Thank you for that summary, Jake! And for the stat lesson. :)
On Dec 18, 2006, at 11:19 PM, Ⓙⓐⓚⓔ wrote:
Since the 7th click is reproducible, and has little to do with the issue,
you can discard the value, with a simple note... years of stat classes!
conclusions:
running thru the whole dom looking for a class is slow.
looking for an ID (which should be unique) after getting the tags is
worthless.
looking for a class after getting a subset of the dom is faster than
searching the whole dom.
Safari is almost always faster than ff!
Just what was expected!
GREAT WORK!
On 12/18/06, Karl Swedberg <[EMAIL PROTECTED]> wrote:
>
> Hey everyone,
> I have results of a few more speed tests that I ran this evening at
> http://test.learningjquery.com/speed-test.htm
>
> Method: I clicked 10 times on each query in Firefox 2.0 and Safari 2.0.4(See
HTML source for all code, markup, etc.) I recorded the mode (most
> common value) and the range of values for each, all in milliseconds.
>
> @ FF2 / Safari2
>
> *1. $('#speech28') *
> - mode: 1 / 1
> - range: 0-1 / 0-4
>
> *2. $('div#speech28') *
> - mode: 43 / 32
> - range: 42-59 / 30-35
>
> *3. $('#final-speech div.final-dialog ')*
> - mode: 5ms / 5ms
> - range: 4-6 / 3-6
>
> *4. $('#final-speech .final-dialog')*
> - mode: 6 / 5
> - range: 5-8 / 3-6
>
> *5. $('div.final-dialog')*
> - mode: 55 / 40
> - range: 28-253 / 40-45
>
> *6. $('.final-dialog')*
> - mode: 101 / 51
> - range: 83-306 / 51-68
>
> ***
> Note that queries 5 and 6 have huge ranges in Firefox because of the
> mysterious seventh click issue.
>
> Looks like these tests confirm what we've all been saying on this list
> about the relative speed of various selectors.
>
> This has been a fascinating exercise. I'd love to hear people's
> analysis, etc.
>
>
> --Karl
> _______________________
> Karl Swedberg
> www.englishrules.com
> www.learningjquery.com
>
>
> _______________________________________________
> jQuery mailing list
> [email protected]
> http://jquery.com/discuss/
>
>
>
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[EMAIL PROTECTED]
http://aheimlich.freepgs.com
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