Sort objects from array

var tempArray = [
  {
    'url': 'http://999.md/14639998',
    'adName': 'Mercedes Benz 316',
    'price': 12900,
    'date': '13 дек. 2014',
    'category': 'buses'
  },
  {
    'url': 'http://999.md/13270912',
    'adName': 'Volkswagen  LT-35 TDI  2006',
    'price': 8550,
    'date': '13 дек. 2014',
    'category': 'buses'
  },
  {
    'url': 'http://999.md/15301120',
    'adName': 'Volkswagen LT-35',
    'price': 5500,
    'date': '13 дек. 2014',
    'category': 'buses'
  },
  {
    'url': 'http://999.md/8693883',
    'adName': 'Ford  tourneo',
    'price': 21,
    'date': '13 дек. 2014',
    'category': 'buses'
  }
];

tempArray.sort(function (a, b) {
  if (a.price > b.price) return 1;
  if (a.price < b.price) return - 1;
  return 0;
});