简单谈谈JavaScript寄生式组合继承

    function SuperType (name) {
        this.name = name;
        this.colors = ["red","yellow","bule"];
    }
    SuperType.prototype.sayName = function(){
        console.log(this.name)
    }
    function SubType(name,age){
        SuperType.call(this,name);
        this.age = age;
    }
    SubType.prototype = new SuperType();
    SubType.prototype.sayAge = function(){
        console.log(this.age);
    }
    let instancel = new SubType("jackson",22);
    instancel.colors.push("pink");
    instancel.sayName(); // "jackson"
    instancel.sayAge();//22
    console.log(instancel.colors);// ["red", "yellow", "bule", "pink"]
    
    let instance2 = new SubType("bear", 20);
    console.log(instance2.colors); // ["red", "yellow", "bule"]
    instance2.sayName(); // "bear";
    instance2.sayAge(); // 20

  // 寄生式继承
    function subobject(obj) {
        let clone = Object(obj);
        clone.sayName = function(){
            console.log("jackson")
        };
        return clone;
    }
    let sub = {
        name:"bear"
    }
    let sup = subobject(sub);
    sup.sayName();//jackson

     function inheritPrototype(subType, superType) {
        let prototype = Object(superType.prototype); // 创建对象
        prototype.constructor = subType; // 增强对象
        subType.prototype = prototype; // 赋值对象
    }

function SuperType(name) {
        this.name = name;
        this.colors = ["red", "blue", "green"];
    }
    SuperType.prototype.sayName = function () {
        console.log(this.name);
    };

    function SubType(name, age) {
        SuperType.call(this, name);
        this.age = age;
    }
    inheritPrototype(SubType, SuperType);
    SubType.prototype.sayAge = function () {
        console.log(this.age);
    };