Comments on: Lessons in JavaScript Performance Optimization http://ajaxian.com/archives/lessons-in-javascript-performance-optimization Cleaning up the web with Ajax Thu, 17 May 2012 07:43:39 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Philip Tellis http://ajaxian.com/archives/lessons-in-javascript-performance-optimization/comment-page-1#comment-111277 Philip Tellis Sat, 30 Sep 2006 11:33:13 +0000 http://ajaxian.com/archives/lessons-in-javascript-performance-optimization#comment-111277 See also <a href="http://bluesmoon.blogspot.com/2006/06/yui-addlistenerbyclassname.html" rel="nofollow">addListenerByClassName</a> See also addListenerByClassName

]]> By: Martin http://ajaxian.com/archives/lessons-in-javascript-performance-optimization/comment-page-1#comment-108180 Martin Thu, 28 Sep 2006 09:07:54 +0000 http://ajaxian.com/archives/lessons-in-javascript-performance-optimization#comment-108180 Well, shouldn't $$ then use document.getElementsByClassName or XPath itself whereever possible? Well, shouldn’t $$ then use document.getElementsByClassName or XPath itself whereever possible?

]]> By: Jason Haley http://ajaxian.com/archives/lessons-in-javascript-performance-optimization/comment-page-1#comment-107627 Jason Haley Thu, 28 Sep 2006 03:52:50 +0000 http://ajaxian.com/archives/lessons-in-javascript-performance-optimization#comment-107627 <strong>Interesting Finds: September 27, 2006</strong> Interesting Finds: September 27, 2006

]]> By: David http://ajaxian.com/archives/lessons-in-javascript-performance-optimization/comment-page-1#comment-107297 David Wed, 27 Sep 2006 21:30:25 +0000 http://ajaxian.com/archives/lessons-in-javascript-performance-optimization#comment-107297 I was just about to propose using XPath if available when I read Andrews comment. So Prototype is using XPath now. That's great. I guess I gotta dig into the code a bit and check out what other stuff has changed since 1.4. I was just about to propose using XPath if available when I read Andrews comment. So Prototype is using XPath now. That’s great. I guess I gotta dig into the code a bit and check out what other stuff has changed since 1.4.

]]> By: Andrew Dupont http://ajaxian.com/archives/lessons-in-javascript-performance-optimization/comment-page-1#comment-106995 Andrew Dupont Wed, 27 Sep 2006 13:57:57 +0000 http://ajaxian.com/archives/lessons-in-javascript-performance-optimization#comment-106995 It makes no sense to use $$ for such a simple selector. <code>document.getElementsByClassName</code> will be orders of magnitude faster, especially with the recent performance optimizations (including querying by XPath if it's available). That said, making $$ less costly is one of the major points of focus for Prototype's 1.5.0 release. It makes no sense to use $$ for such a simple selector. document.getElementsByClassName will be orders of magnitude faster, especially with the recent performance optimizations (including querying by XPath if it’s available).

That said, making $$ less costly is one of the major points of focus for Prototype’s 1.5.0 release.

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