How can i change the color of a button or a div with the onclick function in JavaScript

Answer 1

https://code.sololearn.com/WTI0rXRS1nD2/?ref=app

Answer 2

I tried this but it did not work
https://code.sololearn.com/Wp6A0q0yt9wf/?ref=app

Answer 3

@Ajibola Hey, you have put "mufunction" in onclick attribute but in the JS, you have defined myfunction()!