should onclick attribute be explicitly defined so that attr('onclick') show bound click events?

Question

I have the following anchor to which I bind a click event using jQuery:

<a href="javascript:void(0);" class="myanchor">My Anchor</a>

JQuery code:

 function my_listener()
        {

             $('a.myanchor').click(function(e){
                e.preventDefault();      
                my_function();
                return false;
           });

        }

$( document ).ready(function() {
    my_listener();
});

Now my goal is to be able to see the bound event to the anchor, i.e my_function(). I tried using:

console.log($('a.myanchor').attr('onclick'));

But it is returning undefined. How can know that my_function is bound to the click event on a.myanchor? Does it require explicit onclick attribute definition like:

<a class="myanchor" onclick="myfun();" >​

Thanks for your usual help.