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Mar 1 2020

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JavaScript Tutorial

JavaScript is the programming language of HTML and the Web.

JavaScript is easy to learn.

This tutorial will teach you JavaScript from basic to advanced.

Examples in Each Chapter

With our “Try it Yourself” editor, you can change all examples and view the results.

My First JavaScript

We recommend reading this tutorial, in the sequence listed in the left menu.

Learn by Examples

Examples are better than 1000 words. Examples are often easier to understand than text explanations.

This tutorial supplements all explanations with clarifying “Try it Yourself” examples.

If you try all the examples, you will learn a lot about JavaScript, in a very short time!

Why Study JavaScript?

JavaScript is one of the 3 languages all web developers must learn:

1. HTML to define the content of web pages

2. CSS to specify the layout of web pages

3. JavaScript to program the behavior of web pages

Web pages are not the only place where JavaScript is used. Many desktop and server programs use JavaScript. Node.js is the best known. Some databases, like MongoDB and CouchDB, also use JavaScript as their programming language.

Did You Know?

JavaScript and Java are completely different languages, both in concept and design.

JavaScript was invented by Brendan Eich in 1995, and became an ECMA standard in 1997.
ECMA-262 is the official name of the standard. ECMAScript is the official name of the language.

You can read more about the different JavaScript versions in the chapter JS Versions.

Learning Speed

In this tutorial, the learning speed is your choice.

Everything is up to you.

If you are struggling, take a break, or reread the material.

Always make sure you understand all the “Try-it-Yourself” examples.

JavaScript References

W3Schools maintains a complete JavaScript reference, including all HTML and browser objects.

The reference contains examples for all properties, methods and events, and is continuously updated according to the latest web standards.

JavaScript Exercises

JavaScript Quiz Test

Test your JavaScript skills at W3Schools!

JavaScript Exam – Get Your Diploma!

W3Schools’ Online Certification

The perfect solution for professionals who need to balance work, family, and career building.

More than 25 000 certificates already issued!

The HTML Certificate documents your knowledge of HTML.

The CSS Certificate documents your knowledge of advanced CSS.

The JavaScript Certificate documents your knowledge of JavaScript and HTML DOM.

The Python Certificate documents your knowledge of Python.

The jQuery Certificate documents your knowledge of jQuery.

The SQL Certificate documents your knowledge of SQL.

The PHP Certificate documents your knowledge of PHP and MySQL.

The XML Certificate documents your knowledge of XML, XML DOM and XSLT.

The Bootstrap Certificate documents your knowledge of the Bootstrap framework.

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SOURCE: http://www.w3schools.com/js/DEFAULT.asp

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