jQuery if Element has an ID?

Question

How would I select elements that have any ID? For example:

if ($(\".parent a\").hasId()) {
    /* then do something here */
}

I, by no mean

Answer 1

Like this:

var $aWithId = $('.parent a[id]');

Following OP's comment, test it like this:

if($aWithId.length) //or without using variable: if ($('.parent a[id]').length)

Will return all anchor tags inside elements with class parent which have an attribute ID specified