[Solved] Please help!!

Question

Why line 45 is wrong? And why the rules box does not disappear on clicking OK button? Please suggest some common rules of a normal quiz.
https://code.sololearn.com/WJO76qulDHa1/?ref=app

Answer 1

The id of your button is "ok"
Not "OK!"

Answer 2

Because you don't have any element with id "OK!" see line 40.
And as ok is not define no function on click hence no disappearance of ruleBox.

Answer 3

Line 40

var ok = document.getElementById('ok');

Instead of

var ok = document.getElementById('OK!');

Answer 4

Thank you so much Oma Falk and Divya Mohan, can you please suggest some normal quiz rules as well. Please.