[jQuery] Re: addUnique

[Iconico]

On May 1, 7:42 pm, Dave Methvin <[EMAIL PROTECTED]> wrote:
> That actually sounds like a bug. What version ofjQueryare you using?
> AFAICT,jQuery().add() is supposed to usejQuery.merge to avoid
> duplicates. Can you create a test case and post a bug report?

I'm using 1.2.3, the latest. I don't think it's a bug, it's more
subtle than that.

There's a thread here that details the issue pretty well:
http://groups.google.com/group/jquery-en/browse_thread/thread/f08ee3387b7522b/46b61b9fe4e7d4b6

If you still don't follow I can mock up a test for you, just let me
know.

[jQuery] addUnique

[Iconico]

Just thought that this might help someone's pain. I have a group of
objects and I wanted to add an additional object to it, simply by
doing this:

jQuery('#divMain img').add('#newImg');

The problem was that in my situation '#divMain img' sometimes already
contains '#newImg', and when it does the add function would add a
second copy of it, which messed things up further down the line. What
I really needed was a way of uniquly adding an object to a selection.
A bit of tinkering later and here's the function:

jQuery.fn.addUnique = function(selector) {
 return this.filter(function (index) {
  return (jQuery(this).get(0) != jQuery(selector).get(0))
 }).add(selector);
};

You can just call it like this:

jQuery('#divMain img').addUnique('#newImg');