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JS Tutorial

JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Let JS Const JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Object Properties JS Object Methods JS Object Display JS Object Constructors JS Events JS Strings JS String Methods JS String Search JS String Templates JS Numbers JS BigInt JS Number Methods JS Number Properties JS Arrays JS Array Methods JS Array Search JS Array Sort JS Array Iteration JS Array Const JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS If Else JS Switch JS Loop For JS Loop For In JS Loop For Of JS Loop While JS Break JS Iterables JS Sets JS Set Methods JS Maps JS Map Methods JS Typeof JS Type Conversion JS Destructuring JS Bitwise JS RegExp JS Precedence JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Arrow Function JS Classes JS Modules JS JSON JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words

JS Versions

JS Versions JS 2009 (ES5) JS 2015 (ES6) JS 2016 JS 2017 JS 2018 JS 2019 JS 2020 JS 2021 JS 2022 JS 2023 JS 2024 JS IE / Edge JS History

JS Objects

Object Definitions Object Prototypes Object Methods Object Properties Object Get / Set Object Protection

JS Functions

Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Bind Function Closures

JS Classes

Class Intro Class Inheritance Class Static

JS Async

JS Callbacks JS Asynchronous JS Promises JS Async/Await

JS HTML DOM

DOM Intro DOM Methods DOM Document DOM Elements DOM HTML DOM Forms DOM CSS DOM Animations DOM Events DOM Event Listener DOM Navigation DOM Nodes DOM Collections DOM Node Lists

JS Browser BOM

JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies

JS Web APIs

Web API Intro Web Forms API Web History API Web Storage API Web Worker API Web Fetch API Web Geolocation API

JS AJAX

AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples

JS JSON

JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON Server JSON PHP JSON HTML JSON JSONP

JS vs jQuery

jQuery Selectors jQuery HTML jQuery CSS jQuery DOM

JS Graphics

JS Graphics JS Canvas JS Plotly JS Chart.js JS Google Chart JS D3.js

JS Examples

JS Examples JS HTML DOM JS HTML Input JS HTML Objects JS HTML Events JS Browser JS Editor JS Exercises JS Quiz JS Website JS Syllabus JS Interview Prep JS Bootcamp JS Certificate

JS References

JavaScript Objects HTML DOM Objects


JavaScript Syllabus


Introduction

The W3Schools JavaScript Tutorial is comprehensive and beginner-friendly.

It will give you a fundamental knowledge of JavaScript.

It is designed for beginners and requires no prior experience with programming.

The content has been carefully made to be bite-sized, simple, and easy to understand.

The content has been proven by millions of users over the years. It is updated and improved frequently.

The syllabus outline and its sequence are structured so you can learn JavaScript step by step, from the introduction to creating your first application with JavaScript.

Get Started With JavaScript »


Learning Outcomes

  • Learn how JavaScript works and how it is used in web development.
  • Make web pages interactive by typing and running JavaScript code.
  • Use variables to store and change data.
  • Use data types and operators to do logic and calculations.
  • Organize and reuse code by functions.
  • Conditions, like "if" and "else," let you control how a program runs. Learn how to use them.
  • Use loops (like for and while) to do things over and over again.
  • Learn how to use Document Object Model (DOM) to change HTML elements.
  • Make interactive user experiences by handling events like button clicks and form submissions.
  • Debugging JavaScript code.

Note: Are you a teacher teaching JavaScript? W3Schools Academy is a toolbox of features that can help you teach. It offers classroom features such as pre-built study plans, classroom administration and much more. Read more about Academy here.


Which Subjects Are JavaScript Relevant For?

  • Computer Science (CS) / Information Technology (IT):
    JavaScript is a fundamental programming language used to teach coding, algorithms, and how to make websites that people can interact with.
  • Math:
    JavaScript can be used for mathematical operations and algorithms. It can help you develop logical thinking and problem-solving skills.
  • Physics and Engineering:
    JavaScript can be used for simulations and modeling to help you understand advanced concepts and engineering problems better.
  • Digital Media:
    JavaScript is used to make websites interactive, making your digital projects more relevant and interesting.
  • Business and Entrepreneurship:
    JavaScript makes your web applications, prototypes, and digital presentations interactive.
  • Art and Design:
    JavaScript lets you make animations, interactive graphs, and can be used for generative art.
  • STEM (Science, Technology, Engineering, Mathematics):
    JavaScript as a programming language can be an important part of technology-based projects because it teaches students about logic, automation, and how to use code in the real world.
  • Robotics and the Internet of Things (IoT):
    JavaScript is used by some platforms to program robots and IoT devices.

Get Started


Activities

In this tutorial we offer different activities for you to learn JavaScript for free:


Sign in to Track Progress

You can also create a free account to track your progress.

As a signed-in user, you get access to features such as:

  • Learning paths
  • Sandbox and lab environments
  • Achievements
  • And much more!

Sign Up - It's free


Overview of the Modules

Get Started


Sandbox and Lab Environment

JavaScript, like any other programming language, is best learned by working hands-on with code.

Easily try code with our "Try it Yourself" editor.

Here, you can edit JavaScript code and view the result:

Example

document.getElementById("demo").innerHTML = "Hello JavaScript";
Try it Yourself »

If you want to explore more and host your JavaScript project, we have a feature called Spaces that allows you to build, test and deploy static websites for free.

Here you get a secure sandbox environment called Spaces, where you can practice coding and test projects in real-time.

Spaces allow you to test, build, and deploy code. This includes a W3Schools subdomain, hosting, and secure SSL certificates.

Spaces require no installation and run directly in the browser.

Features include:

  • Collaboration
  • File navigator
  • Terminal & log
  • Package manager
  • Database
  • Environment manager
  • Analytics
Dynamic Spaces

Create a Spaces Account


JavaScript Certification

W3Schools offers an end-of-pathway certification program.

Here you can take exams to get certified.

The JavaScript exam is a test that summarizes the W3Schools JavaScript syllabus.

After passing the exam you get the "Certified JavaScript Developer" Certification.

There are two different types of certifications:

  • Non-adaptive
  • Adaptive

The non-adaptive is pass or no pass.

The adaptive certification is adaptive and graded; students will get a grade from intermediate, advanced to professional.

Buy Certificate »


Are You a Teacher?

Are you interested in learning how you can use W3Schools Academy to Teach JavaScript?

Join our upcoming webinar for a guided demo of W3Schools Academy. You'll see how it works, and discover how it can make teaching programming easier and more engaging.

Join our FREE Webinar »




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