Merging jQuery objects

How to merge jQuery objects for method chaining

When working with jQuery, you sometimes have two or more objects for specific functionality...

$one = $("#one");
$two = $("#two");
$three = $("#three");

But what if you want to call methods on all of them at the same time?  Instead of..

$one.show().addClass("myClass");
$two.show().addClass("myClass");
$three.show().addClass("myClass");

You can .add() them together...

$one.add($two).add($three).show().addClass("myClass");

This has the advantage of being non-destructive, so it does not effect the first object (unlike $.merge)