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');
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