javascript class constructor example

Example 1: metodo constructor javascript

//CREAR UNA CLASE
class miClase {
    constructor(primero, segundo) {
        this.uno = primero;
        this.dos = segundo;
        this.tres = "Hola a todos";
    };
    miMetodoUno() {
        return this.dos;
    }
    miMetodoDos(parametroUno, parametroDos) {
        console.log(
            "El parametro UNO es: " + parametroUno +
            "<br>El parametro DOS es: " + parametroDos
        )
    }
}
//CREAR UN OBJETO - instanciar
var objetoUno = new miClase("Antonio", 56);
//RECUPERAR DATOS
objetoUno.miMetodoDos("Manuel", 44);

Example 2: javascript class constructor

class Person {
  constructor(name, age) {
    this.name = name;
    this.age = age;
  }
}

const person = new Person("John Doe", 23);

console.log(person.name); // expected output: "John Doe"

Example 3: javascript class constructor

class Cat {
        constructor(name, age) {
            this.name = name;
            this.age = age;
        }
      
      	get fullname() {
          return this.getFullName()
        }
        getFullName() {
            return this.name + ' ' + this.age
        }
    }

    const run = document.getElementById("run");
    run.addEventListener("click", function () {
        let Skitty = new Cat('Skitty', 9);
        let Pixel = new Cat('Pixel', 6);
        console.log(Skitty.getFullName()); // Skitty 9
      	console.log(Skitty.fullname); // Skitty 9 => shorter syntax
        console.log(Skitty, Pixel); 
      // Object { name: "Skitty", age: 9} Object {name: "Pixel", age:6}
    })