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!// 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(`${this.name} barks.`);
}
}
let d = new Dog('Mitzie');
d.speak(); // Mitzie barks.
// For similar methods, the child's method takes precedence over parent's method
class Rectangle {
constructor(height, width) {
this.height = height;
this.width = width;
}
// Getter
get area() {
return this.calcArea();
}
// Method
calcArea() {
return this.height * this.width;
}
}
const square = new Rectangle(10, 10);
console.log(square.area); // 100class Polygon {
constructor(height, width) {
this.height = height;
this.width = width;
}
get area() {
return this.calcArea();
}
calcArea() {
return this.height * this.width;
}
}
const square = new Polygon(10, 10);
console.log(square.area);// method 1
function nested(name , age , color){
this.name = name;
this.details = {
age : age,
color : color
}
}
let nestedObj = new nested( "Elroi" , 22 , "blue");
console.log(nestedObj)
// method 2
class Nested2{
constructor(name , age , color){
this.name = name;
this.details = {
age : age,
color : color
}
};
displayInfo(){
console.log(`${this.name} ${this.details.age} ${this.details.color} `)
}
}
let aaa = new Nested2("Ean" , 14 , "black");
aaa.displayInfo();