better parent function (Prototype "up" like)

[phpmyforum]

I often need a specific parent element instead of all or the direct parent, so I came up with this function:

$.fn.extend({
    //### Prototype "up" method
    up: function(selector)
    {
        var found = "";
        selector = $.trim(selector || "");

        $(this).parents().each(function()
        {
            if (selector.length == 0 || $(this).is(selector))
            {
                found = this;
                return false;
            }
        });

        return $(found);
    }
});

[davidserduke]

Is this different from :

$(this).parents(selector);

?

​http://docs.jquery.com/Traversing/parents#expr

If I'm missing something about how yours differs please feel free to reopen the ticket and let me know.

[phpmyforum]

This is the difference:

$(this).parents(selector);

-> returns a set of all ancestors

$(this).up(selector);

-> returns just the first matched element

It behaves similar to prototype's up method (​http://prototypejs.org/api/element/up), except you can't pass a number. Though this could also be added.

[brandon]

Just add the :first selector to your selector. Then it will return what you want. You can also use :eq, :gt or :lt.

Here are the docs for the selectors: ​http://docs.jquery.com/Selectors