Learn ECMAScript - Second Edition

The prototype methods

All the methods in the body of the class are added to the prototype property of the class. The prototype property is the prototype of the objects created using class.

Here is an example that shows how to add methods to the prototype property of a class:

class Person {     constructor(name, age) {         this.name = name;         this.age = age;     }     printProfile() {         console.log("Name is: " + this.name + " and Age is: " + this.age);     } } const p = new Person("Eden", 12);p.printProfile(); console.log("printProfile" in p.__proto__); console.log("printProfile" in Person.prototype);

The output is as follows:

Name is: Eden and Age is: 12truetrue

Here, we can see that the printProfile method was added to the prototype property of the class ...