如何确定两个 ES6 class 实例是否相等？

Question

如何判断两个ES6 class对象实例是否相等？例如：

class Rectangle {
  constructor(height, width) {    
    this.height = height;
    this.width = width;
  }
}

(new Rectangle(1, 1)) === (new Rectangle(1, 1))
(new Rectangle(3, 0)) === (new Rectangle(9, 3))

最后两个语句return false，但我希望它return true，比较实例属性，而不是对象引用。

Answer 1

添加一个方法到 Rectangle class:

class Rectangle {
  constructor(height, width) {    
    this.height = height;
    this.width = width;
  }
  equals(rect) {
    return this.width == rect.width && this.height == rect.height;
  }
}

如何确定两个 ES6 class 实例是否相等？

How to determine equality for two ES6 class instances?

javascript

equality

class

ecmascript-6