function Peopleobj(){
  Peopleobj.prototype.name = "牛魔王";
  Peopleobj.prototype.weapon = "芭蕉扇";
  Peopleobj.prototype.run = function(){
    return this.name + '的武器：' + this.weapon
  }
}
var m1 = new Peopleobj();
var m2 = new Peopleobj();
var m3 = new Peopleobj();
console.log(m1.run() + ',' + m2.run())
console.log(m1.run == m2.run)