JSOOP 存取器(getter和setter)

• 外部访问私有属性

const _radius = new WeakMap()

class Circle {
  constructor(radius) {
    _radius.set(this, radius)
  }
  getRadius() {
    return _radius.get(this)
  }
}
const c = new Circle(1)

•  es6语法，实现想访问属性一样访问

const _radius = new WeakMap()

class Circle {
  constructor(radius) {
    _radius.set(this, radius)
  }
  get radius() {
    return _radius.get(this)
  }
}
const c = new Circle(1)

•  设置属性

const _radius = new WeakMap()

class Circle {
  constructor(radius) {
    _radius.set(this, radius)
  }
  get radius() {
    return _radius.get(this)
  }
  set radius(value) {
    _radius.set(this, value)
  }
}
const c = new Circle(1)