What is wrong with this!!

Question

Please take a look at the JS code and tell me what is the problem.

Link: https://code.sololearn.com/W3X9IJff9H4H/#js

Answer 1

changeclass[i].classList.remove("newclass", "onetherclass");
changeclass[i].classList.add("poor");

Answer 2

ab is called prior to body load. move it from line 14 to between 6 and 7.

Answer 3

you should probably have function ab, not functon

Answer 4

Sure. Elements can have multiple classes so you need to remove any you don't want.

Answer 5

There won't be any errors having classes that aren't used.

Answer 6

Thank you.☺

Answer 7

No i fixed it earlier. It still says innerHTML unable to change property

Answer 8

Thanks @john wells
But it still doesn't change the class. Can you help with that?

Answer 9

I wanted to change (remove old one) the class of one tag. How can I do that?