Button problems

Question

I want to make a button that turns something on and when you press it again it turns that thing off. Can someone do a simple code to show how to do it please?

Answer 1

https://code.sololearn.com/W4t5AORrWY8d/?ref=app

Answer 2

// Or

const ro = document.querySelector(".ro");
const txt = document.querySelector(".txt");

toggle = () => {
ro.classList.toggle("ro-on");
txt.innerText = ro.classList.contains("ro-on") ? "Turn something off" : "Turn something on";
}

Answer 3

If you don't understand then ask here