Question

I want to use inheritance concept in js, so what i did is

function myGarage(x) {
        var _x = x;
        Object.defineProperty(this, "BenZ", {
            get: function () {
                return _x;
            },
            set: function (value) {
                _x = value;
            },
            enumerable: true,
            configurable: true
        });
    }
    myGarage.prototype = new MyCar();
    function MyCar() {
     var _x =0;
        Object.defineProperty(this, "Audi", {
            get: function () {
                return _x;
            },
            set: function (value) {
                _x = value;
            },
            enumerable: true,
            configurable: true
        });
    }

After this i created there instance for myGarage.

        var g1 = new myGarage(true);
        var g2 = new myGarage(false);
        var g3 = new myGarage("null");

The problem here is when i set g1.Audi = 10; all other instance of myGarage‘s Audi will hold the sample value

(eg)

    g1.Audi = 10;
    var a = g2.Audi // a is 10
    var b = g3.Audi; // b is 10

but i set the value to g1.

what i need is other instance must hold the default value or undefined

Answer 1

try the following code, this works fine,

$(document).ready(function () {

        var g1 = new MyGarage(true);
        var g2 = new MyGarage(false);
        var g3 = new MyGarage("null");
        g1.Audi = 10;
        var a = g2.Audi
        var b = g3.Audi;

    });
    function MyCar() {
        var _x = 1;
        Object.defineProperty(this, "Audi", {
            get: function () {
                return _x;
            },
            set: function (value) {
                _x = value;
            },
            enumerable: true,
            configurable: true
        });
    }
    function MyGarage(x) {
        MyCar.apply(this, arguments);
        var _x = x;
        Object.defineProperty(this, "BenZ", {
            get: function () {
                return _x;
            },
            set: function (value) {
                _x = value;
            },
            enumerable: true,
            configurable: true
        });
    }
    MyGarage.prototype = new MyCar();