class javascript

1class ClassMates{
2	constructor(name,age){
3    	this.name=name;
4      	this.age=age;
5    }
6  	displayInfo(){
7    	return this.name + "is " + this.age + " years old!";
8    }
9}
10
11let classmate = new ClassMates("Mike Will",15);
12classmate.displayInfo();  // result: Mike Will is 15 years old!

1class Person {
2 constructor(name, age) {
3   this.name = name;
4   this.age = age;
5 }
6  present = () => { //or present(){
7  	console.log(`Hi! i'm ${this.name} and i'm ${this.age} years old`) 
8  }
9}
10let me = new Person("tsuy", 15);
11me.present();
12// -> Hi! i'm tsuy and i'm 15 years old.

1// Improved formatting of Spotted Tailed Quoll's answer
2class Person {
3	constructor(name, age) {
4		this.name = name;
5		this.age = age;
6	}
7	introduction() {
8		return `My name is ${name} and I am ${age} years old!`;
9	}
10}
11
12let john = new Person("John Smith", 18);
13console.log(john.introduction());

1class Person {
2	constructor(name, age) {
3		this.name = name;
4		this.age = age;
5	}
6	displayInfo() {
7		return this.name + ' is' + this.age + " years old";
8	}
9}
10
11const Anthony = new Person('Anthony', 32);

1class Polygon {
2  constructor(height, width) {
3    this.height = height;
4    this.width = width;
5  }
6
7  get area() {
8    return this.calcArea();
9  }
10
11  calcArea() {
12    return this.height * this.width;
13  }
14}
15
16const square = new Polygon(10, 10);
17
18console.log(square.area);

1// Initializing a class definition
2class Hero {
3    constructor(name, level) {
4        this.name = name;
5        this.level = level;
6    }
7}