JavaScript Tutorial: A Step-by-Step Guide for Beginners
  • Intermediate
  • 20 Lessons
  • 5 hrs of Learning
Watch Tutorials

Tutorial Highlights

Not to be confused with Java, JavaScript—created by Netscape Communications—first appeared in 1995. JavaScript makes web pages more dynamic and user-friendly so that they respond to visitors’ actions. JavaScript became one of the prime programming languages due to its ease of learning and versatility. In our JavaScript tutorial you will learn all about it from JavaScript arrays to loop, and promise to regex and closure. The tutorial also covers critical aspects like javaScript dom, website projects and functions, and objects, and also prepares you for a JavaScript interview. So start learning our JavaScript tutorial now and become a pro at programming!

Skills Covered

  • Array
  • Function
  • Object
  • Promise
  • Regex
  • Closure
  • Dom
  • JavaScript for loop

Topics Covered

The topics covered in the JavaScript tutorial are:

  • JavaScript Array
  • JavaScript Promises
  • JavaScript Functions
  • JavaScript Objects
  • JavaScript Closures
  • JavaScript Async/Await
  • JavaScript Hello World
  • JavaScript Form Validation
  • JavaScript Email Address Validation
  • JavaScript This Keyword
  • JavaScript RegEx
  • JavaScript Loops
  • JavaScript DOM

Why Learn JavaScript?

JavaScript is the most used programming language for the client-side. A lot of famous firms have their websites for client-side coded in JavaScript like Facebook, YouTube, Yahoo, Amazon, etc. JavaScript is also used beyond web development for things like app development for iOS/Android, cross-platform desktop app development.

JavaScript is also being used with new-age technologies like cloud-based computing, Big Data, IoT, etc. which makes it an important language to learn and to stay connected with the modern-day technological revolutions. And all of this is just one click away - start learning with our JavaScript tutorial now!

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Applications and Use Case of JavaScript

Some major applications of JavaScript are as follows:

1. Web Development

JavaScript is preferred to make webpages interactive & dynamic. Whenever special effects are required on a web page like supporting widgets, flash messages, rollover graphics, etc., JavaScript is preferred.

2. Web Applications

JavaScript helps in increasing user engagement on a web page through special effects. It is also used to create web applications across platforms. For example, when you click on any location on Google Maps, an expanded version of that location opens on the map. It all happens in just one tap due to JavaScript. A lot of other web applications that are prominent in the market today are coded in JavaScript.

3. Server Applications

JavaScript is used to create application servers that help in installing and hosting applications/services for end-users.

4. Web Servers

The delivery and storage of web pages to end-users are done through web servers. JavaScript helps in creating web servers through Node.js, which is an open-source environment and uses JavaScript on the server-side.

5. Gaming

A lot of visual effects and design of games are created using JavaScript. JavaScript helps in creating animations via easing (Ease JS).

6. Mobile Applications

A lot of mobile applications for iOS & Android are coded in JavaScript. React Native framework also lets coders use their knowledge of JavaScript and code mobile applications which will work for both iOS or Android.

7. Automation

JavaScript is used for creating automated services. It is being used with IoT and robotics to create smart and intelligent systems. For example, Node JS can be used for programming a flying robot.

You can too become a part of any of these amazing developments - all you need to do is start learning this javascript tutorial!

Who Should Learn JavaScript Tutorials?

In case you have a keen interest in developing games, automation applications, or creating more interactive web pages JavaScript is where you need to focus, and our JavaScript tutorial is where you start!

JavaScript Tutorial: Table of Contents

Lesson 1: Introduction to JavaScript Loops

Loops are programming constructs that are used to execute a set of instructions of code repeatedly. In this lesson of the JavaScript tutorial, you will learn about the various iterative statements used in JavaScript, like do-while, for, and for-in loops.

Lesson 2: All You Need to Know About JavaScript Arrays

An array is a data structure in javascript which is used to store a list of values of the same data type. You will learn about array operations and methods in this JavaScript tutorial lesson. You will also learn about MapReduce and Filter.

Lesson 3: All You Need to Know About JavaScript Promises

If a function keeps waiting for a resource for performing a network request, it might take more time, and while the function awaits the next step, the entire execution freezes. In order to solve this problem, asynchronous programming comes into play. With the ‘promise’ feature you can perform and execute the next steps without changing or stretching the main execution thread. Know all about JavaScript Promises in this lesson of the JavaScript tutorial.

Lesson 4: All You Need to Know About JavaScript Functions

This lesson of the JavaScript tutorial will help you learn all about JavaScript functions - everything about the declaration, syntax, and working.

Lesson 5: JavaScript Objects

In this lesson of the Javascript tutorial, you will learn about objects, how to create one, its properties, methods, and accessors. Objects are an essential part of any Object-oriented programming language, which makes it very important to learn the concept properly, making you ready for real-world applications.

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Lesson 6: How to Implement JavaScript Closures?

You will learn what is variable scope, types of variable scope, and closures in JavaScript in this lesson of the JavaScript tutorial.

Lesson 7: How to implement JavaScript Async/Await?

JavaScript is undoubtedly gaining popularity amongst web developers and in this lesson of the JavaScript tutorial, you will learn its key feature, that is, JavaScript async/await, that are asynchronous programming constructs. These are built on top of promises and generators to express asynchronous actions inline. To learn all about synchronous programming, asynchronous programming, JavaScript async functions in this JavaScript tutorial. The list doesn’t end here: you will get demos for both JavaScript async and await.

Lesson 8: JavaScript Hello World

By the time you reach this lesson of the Javascript tutorial, you will know quite a few concepts of the language. So what’s the next step? Coding. Learn further about Javascript applications in this Javascript tutorial and write the ‘Hello World’ program too!

Lesson 9: How to Implement JavaScript Form Validation?

A web application is meant to be interactive and should be smart enough to validate the information stored by the end-user. And here’s where JavaScript Form Validation comes into play! Just like the name goes - form validation - checks and validates whether or not the provided information or data is accurate or not. Learn all about it in this lesson of the JavaScript tutorial.

Lesson 10: JavaScript ‘This’ Keyword and Ways to Implement it

This lesson of the JavaScript tutorial covers all of the basics you need to know about JavaScript “this” keyword, and also introduce the concept of reference, and finally acquaint you with the “this” keyword on a global and local scope. 

Lesson 11: An Introduction Guide to JavaScript RegEx

This lesson will take you through JavaScript regular expressions, flags, patterns, metacharacters, and quantifiers. 

Learn 12: JavaScript DOM 

JavaScript accesses the contents of a webpage making use of Document Object Model (DOM) which is created by the browser when a webpage is rendered. Wondering what it would be like? Javascript tutorial is your answer to it! Learn all about DOM now.

Get Started with JavaScript Tutorial Now!

The Javascript tutorial is your first step towards a successful web development career and will help you understand various concepts of JavaScript from event handling to conditional to, classes, and JavaScript hoisting. So start learning this JavaScript tutorial and get a step closer to your dream job role!

About the Author

SimplilearnSimplilearn

Simplilearn is one of the world’s leading providers of online training for Digital Marketing, Cloud Computing, Project Management, Data Science, IT, Software Development, and many other emerging technologies.

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