Find an element's sibling in a list of elements

Ok, so here's what 开发者_如何学编程I've got:

I have a list of elements cached in a variable:

elementList = $(".list-of-elements-with-this-class");

I also have a dynamically generated element from that list cached in another variable:

elementList.click(
    function()
    {
        cachedItem = $(this);
    }
);

What I want to do is locate cachedItem in elementList and then select cachedItem's previous or next sibling in the list.

So pseudo code would look like this:

nextCachedItem = elementList.find(cachedItem).next();

or

prevCachedItem = elementList.find(cachedItem).prev();

Obviously, the above doesn't work. :-)

Thanks for your help in advance!

-Tim.

---

I believe next() and prev() deal with the DOM Element, not the jQuery nodelist returned by a query. Therefore you have to deal with the indexes of the nodelist in the jQuery object manually.

Try:

// RAW DOM Nodes
elementList.get(elementList.index(cachedItem) - 1); // previous
elementList.get(elementList.index(cachedItem) + 1); // next

OR:

// jQuery Objects/Node list
elementList.eq(elementList.index(cachedItem) - 1); // previous
elementList.eq(elementList.index(cachedItem) + 1); // next