Find aspect ratio of any resolution (width x height)

aspectratio.js

function gcd(a, b) {
  return (b === 0) ? a : gcd(b, a % b);
}

function getAspectRatio(width, height) {
  const r = gcd(width, height);
  return `${width / r} : ${height / r}`
  /*
  return {
    x: width / r,
    y: height / r
  }
  */
}

console.log(getAspectRatio(1920, 1080)); // "16 : 9"
console.log(getAspectRatio(1632, 510)); // "16 : 5"