json数组按某一字段排序

var array = [
  {name: 'a', phone: 1},
  {name: 'b', phone: 5},
  {name: 'd', phone: 3},
  {name: 'c', phone: 4}
]
array.sort(getSortFun('desc', 'phone'));
function getSortFun(order, sortBy) {
  var ordAlpah = (order == 'asc') ? '>' : '<';
  var sortFun = new Function('a', 'b', 'return a.' + sortBy + ordAlpah + 'b.' + sortBy + '?1:-1');
  return sortFun;
}
console.log(array);