var foo = function(e) {
    if (e) {
        console.log(e);
    } else {
        console.log('this didn\'t come from an event!');
    }
};


$('p').click(foo);

foo(); // instead of $('p').trigger('click')

http://jqfundamentals.com/book/index.html

Rather that using $(element).trigger('click'), check to see if execute has come from an element rather than directly.

Check to see if function triggered by an event

event

jQuery