html “data-” attribute as javascript parameter

Question

Lets say I have this:

Answer 1

you might use default parameters in your function and then just pass the entire dataset itself, since the dataset is already a DOMStringMap Object

that way, you can deal with any data-values that got set in the html tag, or use defaults if they weren't set - that kind of thing

maybe not in this situation, but in others, it might be advantageous to put all your preferences in a single data-attribute

there are probably more terse ways of doing that, if you already know certain things about the order of the data