JavaScript Creational Design Patterns Abstract Factory Pattern
Example
The Abstract Factory Pattern is a creational design pattern that can be used to define specific instances or classes without having to specify the exact object that is being created.
function Car() { this.name = "Car"; this.wheels = 4; }
function Truck() { this.name = "Truck"; this.wheels = 6; }
function Bike() { this.name = "Bike"; this.wheels = 2; }
const vehicleFactory = {
createVehicle: function (type) {
switch (type.toLowerCase()) {
case "car":
return new Car();
case "truck":
return new Truck();
case "bike":
return new Bike();
default:
return null;
}
}
};
const car = vehicleFactory.createVehicle("Car"); // Car { name: "Car", wheels: 4 }
const truck = vehicleFactory.createVehicle("Truck"); // Truck { name: "Truck", wheels: 6 }
const bike = vehicleFactory.createVehicle("Bike"); // Bike { name: "Bike", wheels: 2 }
const unknown = vehicleFactory.createVehicle("Boat"); // null ( Vehicle not known )
