桥接模式

特点

• 用于把抽象化与现实化解耦
• 使得二者可以独立

介绍

• 桥接模式将继承关系转化成关联关系，它降低了类与类之间的耦合度，减少了系统中类的数量，也减少了代码量。

demo

更多详细代码

function Color(color) {
  if (!color || typeof color !== "string") {
    throw new Error("need color!");
  }
  this.color = color;
}

Color.prototype.getColor = function () {
  return this.color;
};

function Shape(shape, color) {
  if (!shape || typeof shape !== "string") {
    throw new Error("need shape!");
  }

  this.shape = shape;

}

Shape.prototype.setColor = function(color){
  if (!color || Color.isPrototypeOf(color)) {
    throw new Error("need color prototype Color!");
  }
  this.color = color;
}

Shape.prototype.draw = function () {
  console.log(`${this.shape} - ${this.color.getColor()}`);
};

const red = new Color("red");
const blue = new Coloe("blue");

const redCircle = new Shape("circle");

redCircle.setColoe(red);
redCircle.draw(); // circle-red;

redCircle.setColoe(blue);
redCircle.draw(); // circle-blue;