Object.isPlain = function (o) {
  return o && o != null && o.constructor == Object;
};

Object.combine = function (keys, values) {
  if (keys.length == values.length) {
    var r = {}
      , i = 0;
    for (; i < keys.length; ++i) {
      r[keys[i]] = values[i];
    }
    return r;
  }
  return null;
};

Object.combine = function (keys, values) {
  return keys.reduce(function (prev, v, i) {
    prev[v] = values[i];
    return prev;
  }, {});
}
Object.combine(['name', 'age'], ['Ivan', 33])
Object {name: "Ivan", age: 33}