your-order-please.js

// Your order, please
// https://www.codewars.com/kata/55c45be3b2079eccff00010f

/* Solution 1 */
function order(words){
  if(!words) {
    return words;
  }
  var arr = words.split(' ');
  var obj = {};
  for(var el of arr) {
    var number = getNumber(el);
    obj[number] = el;
  }
  return Object.values(obj).join(' ');
}

function getNumber(str) {
  return str.match(/\d+/)[0];
}

/* Solution 2 */
function order(words) {
  return words.split(' ').sort((a, b) => getNumber(a) - getNumber(b)).join(' ');
}

function getNumber(str) {
  return str.match(/\d/)[0];
}