It's currently not so slow as to make the site unusable, but in mobile safari on the iphone there is a noticeable lag. Is there a simpler way to do this?
"Find div.items that have an empty div.video_guid"
views:
126answers:
2
A:
Are there div's with a class video_guid anywhere else on the page? If not, you could simplify it to:
$('div.video_guid:empty');
The only difference between your selector and mine is that yours would match the parent div.item while mine would match the actual div.video_guid. To get around this, once my selector matches, if you want to perform operations to the parent div.item you could just do:
$('div.video_guid:empty').each(function() {
var container = $(this).parents('div.item');
// do something to the containing div
});
All things considered, I would expect that to perform better..
Paolo Bergantino
2009-03-13 17:32:52
Yes these are the only div.video_guid:empty on the page. I was under the impression though that specifying the container in the selector aided performance, ie: $('#thecontainer div.video_guid:empty');OR$('div.video_guid:empty','#thecontainer');I'll see if I can run some tests, thanks!
jackb
2009-03-13 18:19:41
That is actually correct. I'd probably change mine to have a second argument of #data
Paolo Bergantino
2009-03-30 21:25:05
A:
Read this related question. According to this,
$(‘div.item:has(div.video_guid:empty)’, '#data')
should be faster. Strange, but apparently measurable.
David Hanak
2009-03-13 21:54:15