代如下function Person(){}Person.prototype.name = 'Mary';var p1 = new Person();var p2 = new Person();p1.name = 'Jack';p2.name = 'Tom';console.log(p1.name);console.log(p2.name);控制臺(tái)輸出為JackTomname屬性為原型對(duì)象擁有，為什么p2重新復(fù)制以后，p1依然能訪問(wèn)到自己賦的值？