selected options are marked with a checkbox in the list and a badge at the top. if the tick box is ticked the user can select multiple values, if not ticked they can only select one value. I want to change whether a user can select only, one or multiple options in a select box based on a tick box above. type to filter long lists of options. I was previously using the .live() method, but not quite sure how to accomplish the same feat with .on(). Description: Matches elements that match all of the specified attribute filters. Improve the useability of HTML