Javascript Class Example | How To Use Class in Javascript

Javascript Class Example | How To Use Class in Javascript

JavaScript is a prototype-based language, and every object in JavaScript has a hidden internal property called [[Prototype]].

JavaScript is a prototype-based language, and every object in JavaScript has a hidden internal property called [[Prototype]]. JavaScript ECMAScript 5, does not have a class type. So it does not support the full object-oriented programming concept as other programming languages like Java or C#. However, you can create the function in such a way that it will act as a class.

JavaScript ECMAScript 5 Way of Class

In ES5, the Classes are Functions.

Let’s see the following example.

// app.js

function Employee() {
  this.firstName = 'Krunal';
  this.lastName = 'Ankit';
}

var empA = new Employee();
empA.firstName = 'Rushabh';
empA.lastName = 'Dhaval';

console.log(empA.firstName + ' ' + empA.lastName);

var empB = new Employee();
empB.firstName = 'Nehal';
empB.lastName = 'Khushbu';

console.log(empB.firstName + ' ' + empB.lastName);

In the above code example, we have created the Employee class in ES5.

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