嘿,大家好!今天咱们不搞虚的,直接开讲——JS的 Mixins,以及为什么它在代码复用这块儿,能把传统继承甩开几条街。 开场白:继承的甜蜜陷阱 当年咱们学面向对象,继承可是被捧上了天。想象一下,一个“动物”类,猫、狗、鸟都继承它,多简洁!代码复用杠杠的! class Animal { constructor(name) { this.name = name; } eat() { console.log(`${this.name} is eating.`); } } class Dog extends Animal { bark() { console.log(“Woof!”); } } class Cat extends Animal { meow() { console.log(“Meow!”); } } const dog = new Dog(“Buddy”); dog.eat(); // Buddy is eating. dog.bark(); // Woof! const cat = new Cat(“Whiskers”); cat.eat(); // Whiskers is …