several way to implement inheritance in javascript

//1.prototype chain inheritance
    function SuperType() {
        this.property = true;
    }
    SuperType.prototype.getSuperValue = function () {
        return this.property;
    };
    function SubType() {
        this.subproperty = false;
    }

    //inherited from SuperType
    SubType.prototype = new SuperType();
    SubType.prototype.getSubValue = function () {
        return this.subproperty;
    };

    //2.constructor stealing inheritance
    function SuperType() {
        this.colors = ["red","blue","green"];
    }
    function SubType() {
        //inherited from SuperType
        SuperType.call(this);
    }

    //3.combination inheritance
    function SuperType(name) {
        this.name = name;
        this.colors = ["red", "blue", "green"];
    }
    SuperType.prototype.sayName = function () { alert(this.name); };
    function SubType(name,age) {
        //inherit properties
        SuperType.call(this, name); //second call superType()
        this.age = age;
    }
    //inherit method
    SubType.prototype = new SuperType(); //first call superType()
    SubType.prototype.sayAge = function () { alert(this.age); };

    //4.prototypal inheritance in javascript
    function object(o) {
        function F() { }
        F.prototype = o;
        return new F();
    }

    //5.parasitic inheritance
    function createAnother(original) {
        var clone = object(original);
        clone.sayHi = function () { alert("hi"); };
        return clone;
    }

    //6.parasitic combinate inheritance
    function inheritPrototype(subType, superType) {
        var prototype = object(superType.prototype);
        prototype.constructor = subType;
        subType.prototype = prototype;
    }
    function SuperType(name) {
        this.name = name;
        this.colors = ["red","blue","green"];
    }
    SuperType.prototype.sayName = function () { alert(this.name); };

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