How to check if one element is exist under a form in jQuery

Question

I have a form with id commentform and if any logged in user visit the page a p tag gets generated under the form that with class logged-in-as. Now I am trying to check if that p exists and if not exists then do my validation which uses keyup(). Here is a small snippet...

$('form#commentform').keyup(function() {
        if( ! $(this).has('p').hasClass('logged-in-as') ) {
            ....
            } else {
                ......
            }
        }
    });

Now the problem is that the if( ! $(this).has('p').hasClass('logged-in-as') ) is not returning me the expected result whether or not that specific p exists.

Can any of you guys tell me any other/better way to check this?

Answer 1

$('form#commentform').keyup(function() {
    if($(this).find('p.logged-in-as').length == 1) {
        ....
        } else {
            ......
        }
    }
});

You can do this to find it.