number to binary javascript
// method one
function convertNumberToBinary (num) {
 return parseInt([...num.toString(2)].reverse().join(''), 2);
}
// methode two
function convertNumberToBinary (num) {
 return parseInt(num.toString(2).slice('').reverse().join(''), 2);
}
// methode three
function convertNumberToBinary (num) {
  let binary = (n >>> 0).toString(2).split('').sort().join('');
  let number = parseInt(binary, 2);
  return num;
}