Adding new properties and methods to the child class : Inheritance : Object Oriented JAVASCRIPT TUTORIALS

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Adding new properties and methods to the child class

All new properties and methods must be added after the line that deletes the new method.



function BaseClass(sColor) {
    this.color = sColor;
    this.sayColor = function () {
        alert(this.color);
    };
}


function SubClass(sColor, sName) {
    this.newMethod = BaseClass;
    this.newMethod(sColor);
    delete this.newMethod;

    this.name = sName;
    this.sayName = function () {
        alert(this.name);
    };
}

var objA = new BaseClass("red");
var objB = new SubClass("blue", "MyName");
objA.sayColor();
objB.sayColor();
objB.sayName();