Answers for "how to generate random colors js"

js random hex color

'#'+Math.floor(Math.random()*16777215).toString(16);

javascript generate random color

const setBg = () => {
  const randomColor = Math.floor(Math.random()*16777215).toString(16);
  document.body.style.backgroundColor = "#" + randomColor;
  color.innerHTML = "#" + randomColor;
}

genNew.addEventListener("click", setBg);
setBg();