I've used [classlist-add( ) ] but in another browser not allowed me to use which one it allowed for all browsers?

Question

For javascript

Answer 1

can i see the code ?

Answer 2

You can use element.className += " class" but I don't think classList isn't working :)

Answer 3

r8w9 add()is incompatible in ie according to mdn,
maybe polyfill could help