Classes can be defined with the class keyword followed by its identifier. You can instantiate a class with the new keyword.
class Car {
//Attributes and methods
}
let ford = new Car
You can access the attributes of a class by using the following syntax: ClassName.attribute.
Methods can be defined the same way as functions but without the fun keyword. They can receive arguments and return values. Methods can be accessed the same way as attributes, using the dot syntax.
class Car {
accelerate(){
self.setSpeed(self.getSpeed() + 1.25);
}
}
let ford = new Car
ford.accelerate();
The self keyword refers to the current instance of an object.
class Car {
constructor(initialSpeed) {
self.speed = initialSpeed;
}
}
The constructor is a method named constructor() and is used to initialize an object with initial parameters or to execute some action when it is instantiated.
class User {
constructor(initialSpeed) {
self.speed = initialSpeed;
}
}
Inheritance is indicated by the extends keyword. class X extends Y means that the class X inherits from Y.
class Car extends Vehicle {
//Constructor and methods go here
}