Comments on: 10 Ways to Instantly Increase Your jQuery Performance

By: Andrea Grabner

Andrea Grabner — Wed, 11 Nov 2009 15:20:46 +0000

Here is some more insight to the CSS Selector Performance: http://blog.dynatrace.com/2009/11/09/101-on-jquery-selector-performance/

By: Noguchi

Noguchi — Sat, 19 Sep 2009 02:48:28 +0000

Kiddy, go away

By: Sumeet Chawla

Sumeet Chawla — Fri, 11 Sep 2009 15:04:55 +0000

Awesome tips.. thanks a ton

By: Andrea

Andrea — Sun, 06 Sep 2009 16:16:39 +0000

Thanks Björn!

By: somihanquoc.com

somihanquoc.com — Fri, 04 Sep 2009 06:34:11 +0000

Hay phet, cha hieu gi. Ong Tay nao dich duoc ta viet gi thi moi goi la gioi

By: Anthony James Bruno

Anthony James Bruno — Mon, 06 Jul 2009 15:09:45 +0000

Here is a version of the YUI Compressor online: http://yui.2clics.net/

By: Jeremy Dill

Jeremy Dill — Tue, 30 Jun 2009 15:24:16 +0000

Abstraction will always cost you some performance, but I really think jQuery team needs to do some more performance testing and ask themselves why some basic functions such as .each take so much more time that native js which requires only a tad bit more code to write. Maybe they can find some performance gains somewhere while maintaining the excellent abstraction.

For example, something that has really be bothering me…

regarding
1. var list = ”;
2.
3. for (var i=0; i<1000; i++) {
4. list += ”+i+”;
5. }
6.
7. (’#list’).html (list);

I find it is actually faster to avoid .html(), and instead perform native js function of innerHTML on the object. For example:

$(’#list’)[0].innerHTML(list);

While this kind of tweak really only matters when looping, it comes up a lot when I am coding, and I hate having the temptation to break away from normal jQuery in order to achieve performance.

By: James

James — Sun, 28 Jun 2009 19:37:33 +0000

What? “end the query” …. I think you mean “end the function”. Returning false has absolutely nothing to do with jQuery – it’s a JavaScript statement.

By: James

James — Sun, 28 Jun 2009 19:35:43 +0000

Greg! Don’t do this!

For one, you shouldn’t be using the ‘javascript’ pseudo protocol and you definitely should not be using inline JavaScript! Search “unobtrusive JavaScript” … you’ll be enlightened

By: James

James — Sun, 28 Jun 2009 19:34:33 +0000

@Swapnil; an interesting take on the issue but explicitly returning something WILL NOT improve performance… Plus, it’s just a strange tip… If a function needs to return something then let it otherwise there’s no benefit; JavaScript returns UNDEFINED by default.

It’s like saying, always use single quotes instead of double quotes because they’re specified earlier in the charset… makes no sense.