Question

I need to have the ability for the user to click a ‘+’ which adds a new drop-down to an infinitely expanding collection of drop-downs. If I give them all the same id, will the jQuery change event know which one called the change event based on $(this) or do I need to have a new id for each new drop-down that is created during the page lifetime?

…if there is another control that must change in relation to which drop-down was changed, will there be a way to know which one relates to it if they all have the same id? (picture two drop-downs side by side where changing the first one changes the options on the second one, so it’s like an infinitely expanding collection of PAIRS of drop-downs that relate to each other)

Answer 1

Don’t give them the same ID as that is not valid and will not work. Give them the same class.