sort-array-of-object.js

const ds = function (p) {
  let s = 1;
  if (p[0] === '-') {
    s = -1;
    p = p.substr(1);
  }
  return function (a, b) {
    let r = 0;
    if (typeof a[p] === 'string' || typeof b[p] === 'string') {
      let _a = String(a[p]);
      let _b = String(b[p]);
      for (let i = 0; i < _a.length; i++) {
        if (i > _b.length) {
          break;
        }
        if (_a === _b) continue;
        r = _a < _b ? -1 : 1;
        break;
      }
      if (r !== 0 && _a.length !== _b.length) {
        r = _a.length < _b.length ? -1 : 1;
      }
      return r;
    }
    r = a[p] < b[p] ? -1 : a[p] > b[p] ? 1 : 0;
    return r * s;
  };
};

/** 
 * @example
 * [{...},{...}].sort(obsort('field'));
 * [{...},{...}].sort(obsort('field1','field2'));
*/
const obsort = function () {
  var a = arguments;
  return function (o1, o2) {
    var i = 0,
      r = 0,
      n = a.length;
    while (r === 0 && i < n) {
      r = ds(a[i])(o1, o2);
      i++;
    }
    return r;
  };
};