Question

Please what is the difference between using jquery .bind() to attach an event to a selector and simply calling an event directly e.g .click() or .change()

Answer 1

There is no difference between

$().click(fn) or $().change(fn)

and

$().bind('click',fn) or $().bind('change',fn)

as in the background (jQuery source) the click and change methods use bind

Although as pointed out in this answer -> jQuery: $().click(fn) vs. $().bind('click',fn);

You can use bind for multiple events