OK, here is an interesting tidbit. I used the test below and and did the 7 click thing, and out of all my tests except one, the long delay happened in has() and once I got it in find(). has() is pretty simple and I wonder if this has less to do with the number of clicks versus the number of regex's we use and dispose or something like that.
I love testing!!! It makes one look at what is happening and sometimes you are surprised! but the questions and introspection are always good on occasion. -Steve Aaron Heimlich wrote: > 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/ > <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] > <mailto:[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] >> <mailto:[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 <http://www.englishrules.com> >> www.learningjquery.com <http://www.learningjquery.com> >> >> >> _______________________________________________ >> jQuery mailing list >> discuss@jquery.com <mailto:discuss@jquery.com> >> http://jquery.com/discuss/ <http://jquery.com/discuss/> >> >> >> >> >> >> -- >> Ⓙⓐⓚⓔ - יעקב ʝǡǩȩ ᎫᎪᏦᎬ >> _______________________________________________ >> jQuery mailing list >> discuss@jquery.com <mailto:discuss@jquery.com> >> http://jquery.com/discuss/ > > > _______________________________________________ > jQuery mailing list > discuss@jquery.com <mailto:discuss@jquery.com> > http://jquery.com/discuss/ > > > > > > -- > Aaron Heimlich > Web Developer > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > http://aheimlich.freepgs.com <http://aheimlich.freepgs.com> > > > ------------------------------------------------------------------------ > > _______________________________________________ > jQuery mailing list > discuss@jquery.com > http://jquery.com/discuss/ _______________________________________________ jQuery mailing list discuss@jquery.com http://jquery.com/discuss/
