Certified JavaScript Developer

How It Works

  1. 1. Select Certification & Register
  2. 2. Receive Online e-Learning Access (LMS)
  3. 3. Take exam online anywhere, anytime
  4. 4. Get certified & Increase Employability

Test Details

  • Duration: 60 minutes
  • No. of questions: 50
  • Maximum marks: 50, Passing marks: 25 (50%).
  • There is NO negative marking in this module.
  • Online exam.

Benefits of Certification

$49.00 /-
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JavaScript, ES6, Babel, NPM, Webpack – an entire JavaScript ecosystem in a one JavaScript Bootcamp course. 

Key Features

  • Understand the proper methods for working with arrays: map, forEach, reduce, filter, and includes
  • Understand the purpose of the Node Package Manager (NPM) 

What You Will Learn

  • Learn JavaScript, ES6, NPM, Webpack, Babel, Node, and React by solving lots of challenges with real-world scenarios
  • Each challenge has a task and solution. And all of them are available in the GIT repositories that you will download at the beginning of the course
  • Learn all fundamental features of JavaScript, starting with basic concepts such as variables, objects, functions, scopes, and operators and finishing with advanced topics as closures, hoisting, IIFEs (Immediately Invoked Function Expressions), classes, and many more
  • Learn and understand ES6 features such as arrow functions, destructuring, default function parameters, template literals, array helper methods, and classes

Note: Please note that the course comes with online e-learning (videos) only. No hard copy will be provided.

Why should one take JavaScript certification?

This course covers everything you need to know about JavaScript to become a frontend web developer, a full-stack web developer, or a backend developer. You'll start from the very beginning and learn the fundamentals and basic concepts of JavaScript. Then you will learn new features included in ES6, ES7, and more. Also, you'll explore the Node.js environment for JavaScript code execution and you will understand the difference between a web browser and Node.js.

Who will benefit from taking JavaScript Certification?

This course will help students, professionals to master JavaScript and become Front-end Web developer, or Full-stack Web Developer, or Back-end developer.

JavaScript Developer Table of Contents


JavaScript Practice Questions


JavaScript Interview Questions


Companies that hire Vskills JavaScript Developer

IT companies, MNCs hire JavaScript developer for Web Development related task. Companies hiring JavaScript Developer includes Google, TCS, Accenture, IBM, Tech Mahindra, Cognizant, Infosys etc.

JavaScript Related Blogs

Checkout the latest online blogs on JavaScript.

JavaScript Jobs

Checkout the various job openings for JavaScript, click here..

JavaScript Internships

Vskills runs its flagship internship program where bright interns work with academic council, click to know more details..

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  • Intro
  • Course Navigation


  • Install "cmder"
  • Visual Studio Code Setup
  • Launch Node.js and execute test JavaScript file
  • Git Overview

JavaScript Intro

  • Intro
  • Exploring Web Sites in the Browser
  • Create first HTML file and start Live Server
  • Add favicon to the HTML file
  • JavaScript embedded into the HTML
  • JavaScript in the separate file
  • JavaScript in the Console of the Browser

JavaScript Types and Variables

  • Object in JavaScript
  • Primitive vs Reference Value Types
  • Variable declaration using "var", "let" and "const"
  • Statically vs Dynamically typed Languages

JavaScript Objects

  • Variety of Objects in JavaScript
  • Objects Modification
  • Global Objects - "window" and "global"
  • Methods of the Object

JavaScript Functions

  • Introduction to the Functions
  • Syntax of the Function
  • Function Expressions vs Function Declarations
  • Function Expressions

JavaScript Operators

  • JavaScript Operators (arithmetic, Comparison, Logical)
  • Operands, Unary vs Binary Operators and Notations
  • Operators Precedence and Associativity

JavaScript Expressions vs Statements

  • Expressions vs Statements

JavaScript Scopes

  • JavaScript Scopes
  • Undeclared Variables and "use strict"

JavaScript Arrays

  • JavaScript Arrays
  • JavaScript Array Methods

JavaScript Loops and Conditional Statements

  • JavaScript "for" Loop
  • JavaScript "while" Loop
  • JavaScript "do while" Loop
  • JavaScript "for in" and "for of" Loops
  • JavaScript Conditional Statements - if, if else and switch
  • JavaScript Ternary Operator

JavaScript Advanced Topics

  • JavaScript Mutable vs Immutable Values
  • JavaScript "typeof" and "instanceof" Operators
  • JavaScript "new Array", "new String"
  • JavaScript "new Object", "new Function"
  • JavaScript Execution contexts and Execution contexts stack
  • JavaScript "this"
  • JavaScript "call", "apply" methods of the Function
  • JavaScript "bind" method of the Function
  • JavaScript "pass by value" vs "pass by reference"
  • JavaScript IIFE - Immediately Invoked Function Expression
  • JavaScript Synchronous Code Execution
  • JavaScript Events and Events queue
  • JavaScript Callbacks
  • JavaScript Closures

ES6 Variables Lifecycles

  • Scopes - Global, Function and Block
  • JavaScript let
  • JavaScript const
  • JavaScript Variables Usage Guidelines
  • JavaScript Var, Let or Const?
  • JavaScript Engine Phases
  • Variable Lifecycle Phases
  • JavaScript Var lifecycle
  • JavaScript Undeclared variable lifecycle
  • JavaScript Let lifecycle
  • JavaScript Const lifecycle
  • JavaScript Function lifecycle

ES6 Arrow functions

  • Introduction to the Arrow Functions
  • Traditional JavaScript Functions Overview
  • Arrow Functions syntax
  • Arrow Functions and "this".
  • Regular functions instead of Arrow Functions
  • Arguments in the Functions

ES5.1 Array Helper Methods

  • JavaScript forEach() Overview
  • JavaScript map() Overview
  • JavaScript filter() Overview
  • JavaScript find() Overview
  • JavaScript every() and some() Overview
  • JavaScript includes() Overview
  • JavaScript reduce() Overview
  • How sort() works?
  • JavaScript Sorting Algorithms Overview

ES6 Template Literals

  • JavaScript Template Literals Overview
  • JavaScript Tagged Templates Overview

ES6 Rest/Spread Operators and Default Function Parameters

  • Rest Parameters Overview
  • Spread Operator Overview
  • Default Function Parameters Overview

ES6 Enhanced Object Literals

  • Enhanced Object Literals Overview

ES6 Array and Object Destructuring

  • Destructuring Overview
  • Object Destructuring
  • New Variable Names and Default Values in Object Destructuring

ES6 Classes, Prototypes and Function Constructors

  • Class-based vs Prototype-based
  • What is inheritance?
  • Prototype Chain
  • __proto__ and [[Prototype]]
  • What is Prototype?
  • Don't reassign __proto__
  • Native Prototypes
  • Prototypal Inheritance in JavaScript
  • Function Constructors
  • Object.create() Overview
  • "instanceof" and "typeof" in the Prototype Chain
  • Classes - Overview
  • Classes vs Function Constructors
  • React and ES6 Classes

Babel Introduction

  • Babel Module Introduction
  • What is Compiler?
  • Compiled vs Interpreted languages
  • Transpiler
  • Transpling vs Compiling
  • ES5, ES6 and JavaScript
  • What Babel does?
  • Why do we need Babel?
  • ES6 support by Browsers
  • How many browsers need compiled ES5 code?
  • What is User Agent?
  • Serve different JS files to different browers
  • Different JS files on the server
  • How Babel Works?
  • Install Babel Globally
  • Plugins and Presets

NPM - Node Package Manager

  • Introduction to the NPM
  • Package.json and init
  • Semantic Versioning
  • Packages Installation
  • Dependencies and Development Dependencies
  • Browser App vs Public Package
  • Why package-lock.json file is needed?
  • How lock file is handled
  • Update NPM packages overview
  • Introduction to the NPM scripts
  • NPM .bin Folder with Executable Scripts

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