Mega Code Archive

 

Categories / JavaScript Tutorial / Object Oriented

 

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();