从原型继承属性

Question

我正在做学校作业，我想继承以前的构造函数的属性。 我使用了object.create，但是当我创建一个继承先前属性的新对象时，它没有正确分配属性。

我试图更改编写新对象的语法，并尝试查看学校的笔记。

            function GameObject(createdAt,name,dimensions){
              this.createdAt = createdAt;
              this.name = name;
              this.dimensions = dimensions;
            }
            GameObject.prototype.destroy = function(){
              return `${this.name} was removed from the game.`
            }
            const hi = new GameObject(
            "microsoft","hi","300 X 600")
            console.log(hi)
            console.log(hi.destroy())
            /*
              === CharacterStats ===
              * healthPoints
              * takeDamage() // prototype method -> returns the string '<object name> took damage.'
              * should inherit destroy() from GameObject's prototype
            */
            function CharacterStats(healthPoints){
              this.healthPoints = healthPoints
              GameObject.call(this, healthPoints)

            }
            CharacterStats.prototype.takeDamage = function(){
              return this.name + " took damage."
            }
            CharacterStats.prototype = Object.create(GameObject.prototype)
            const yay = new CharacterStats(
              "microsoft","hi","300 X 600")
            console.log(yay)

我希望yay对象不仅可以正确继承healthPoints属性，而且还可以继承GameObject的属性

Answer 1

这些属性不是由与原型相关的任何内容创建的，而是由您对GameObject构造函数的调用创建的。 但是您没有在此处传递正确的论点，应该

function CharacterStats(createdAt, name, dimensions, healthPoints) {
//                      ^^^^^^^^^  ^^^^  ^^^^^^^^^^
  GameObject.call(this, createdAt, name, dimensions);
//                      ^^^^^^^^^  ^^^^  ^^^^^^^^^^
  this.healthPoints = healthPoints;
}

那你可以做

const yay = new CharacterStats("stackoverflow", "marcus", "300 X 600", 8);