Question

is there a way to serialize all form elements using serialize() function except the checkboxes?

Answer 1

From the docs:

The .serialize() method can act on a
jQuery object that has selected
individual form elements, such as
<input>, <textarea>, and <select>.

You could do this:

var s = $('#post-form').find('input, textarea, select')
                       .not(':checkbox')
                       .serialize()