adding checkbox to a combobox

Question

I want to add check boxes inside a combo box and then use the values of the checked boxes in my sql query.

Also I need to append the checked values to an array and then use the elements of that array in my sql query. How can I proceed?

Answer 1

This can't be done with plain HTML, you will need JavaScript support.

A very, very nice and mature-looking jQuery based example is jQuery MultiSelect. Site - Demos