javascript - 卡住 JavaScript 对象

Question

我有一个具有某些属性的类，并基于它们创建了新对象。我不希望一个对象在创建对象后将某些属性添加到类中。我试过对象卡住对象。但它不起作用。想知道是否有办法这样做？

function Person(first, last, age, eye) {
    this.firstName = first;
    this.lastName = last;
    this.age = age;
    this.eyeColor = eye;
}

var myFather = new Person("John", "Doe", 50, "blue");
var myMother = new Person("Sally", "Rally", 48, "green");
Object.freeze(myMother); // does not work

Person.prototype.favColor = 'green'; // this is reflected in myMother object as well which i don't want

Answer 1

你试图(不)改变原型(prototype)对象，所以你必须卡住原型(prototype)对象:

function Person(first, last, age, eye) {
    this.firstName = first;
    this.lastName = last;
    this.age = age;
    this.eyeColor = eye;
}

var myFather = new Person("John", "Doe", 50, "blue");
var myMother = new Person("Sally", "Rally", 48, "green");
Object.freeze(Person.prototype); // now it does work

Person.prototype.favColor = 'green';
console.log(myMother);