class ClassMates{
constructor(name,age){
this.name=name;
this.age=age;
}
displayInfo(){
return this.name + "is " + this.age + " years old!";
}
}
let classmate = new ClassMates("Mike Will",15);
classmate.displayInfo(); // result: Mike Will is 15 years old!class Car {
constructor(name, year) {
this.name = name;
this.year = year;
}
carDetails() {
console.log("Car name: " + this.name, "\nCar year: "+ this.year);
}
drive() {
console.log("Driving!")
}
}
let car = new Car("Audi", 2019);
car.carDetails();
car.drive();
// Improved formatting of Spotted Tailed Quoll's answer
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
introduction() {
return `My name is ${name} and I am ${age} years old!`;
}
}
let john = new Person("John Smith", 18);
console.log(john.introduction());function Animal (name) {
this.name = name;
}
Animal.prototype.speak = function () {
console.log(`${this.name} makes a noise.`);
}
class Dog extends Animal {
speak() {
console.log(`${this.name} barks.`);
}
}
let d = new Dog('Mitzie');
d.speak(); // Mitzie barks.
// For similar methods, the child's method takes precedence over parent's method
class Rectangle {
constructor(height, width) {
this.height = height;
this.width = width;
}
// Getter
get area() {
return this.calcArea();
}
// Method
calcArea() {
return this.height * this.width;
}
}
const square = new Rectangle(10, 10);
console.log(square.area); // 100class Polygon {
constructor(height, width) {
this.height = height;
this.width = width;
}
get area() {
return this.calcArea();
}
calcArea() {
return this.height * this.width;
}
}
const square = new Polygon(10, 10);
console.log(square.area);