function Parent(name){
  this.name = name;
  this.showMess = function(){
    return this.name;
  }
}
Parent.prototype.getList = function(){
  return this.name;
}

function Child(name,age){
  this.room = 'room';
  this.phone = '13739238087';
  this.play = function(){
     return "大电话"+this.phone;
  }
  Parent.call(this,name);

}
Child.prototype = new Parent;