How to change the autoplay attribute?

Question

I'm using autoplay in my code, but I want the video to stop playing as soon as someone pushes a button. I've set the autoplay attribute to true in HTML, but how can I change it back to false in JavaScript? (or HTML if possible)

This is my code:
https://code.sololearn.com/WdwSg2Um7KD2/?ref=app

It's about the link with id="music"

Answer 1

video.removeAttribute("autoplay");
or
video.autoplay = "false"||"off";
video.setAttribute("autoplay","...");

//does any work??

Answer 2

iframe.src = "https://www.youtube.com/embed/7JIdJLkJ0S4?autoplay=0";

//maybe change the 1 from the end of src to 0?

Answer 3

Nope :/
It's specified as iframe though, not sure if that matters

Answer 4

Nope, if I change it in HTML, it's changed from the beginning, but I want it only to stop after pushing the button and if I change it in JS I get errors