js 设置属性setter,getter的姿势

var o = {
  _sex: 'man',
  set sex(sex) {
    this._sex = sex;
  },
  get sex() {
    return this._sex;
  }
};

Object.defineProperty(o, 'name', {
  set: function(name) {
    this._name = name;
  },
  get: function() {
    return this._name
  }
})

o.name = 'wwp';
o.sex = 'woman'
window.console.log('o.sex =', o.sex,'  o.name =', o.name)