Question

http://api.jquery.com/jQuery.unique/ lets you get only unique elements. Is there I can find out if an element is already in the list or not.

list = $('#container p a');

elem = $('#container div a:first');

Is there a way to find out if elem is already in the list or not.

Answer 1

You can use index():

if (list.index(elem[0]) == -1) {
  ...
}

It will return -1 if the element isn’t in the collection.