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W3.JS Tutorial

W3.JS is a JavaScript library designed to simplify web development projects:

Easy to learn and easy to use.

Designed for fast application development.

Designed for all devices: PC, Tablet, and Mobile.

Free to use. No licenses.

What Can W3.JS Do?

Below is a list of the some of the things W3.JS can do:

W3.JS Examples

At the end of the W3.JS tutorial, you can find more than 100 examples.

With our online editor, you can edit and test each example yourself.

Go to W3.JS Examples!

W3.JS References

In this tutorial you will also find a complete W3.JS reference about all functions and attributes.

W3.JS References

How To

W3.JS is very easy to use.

Just add a link to w3.js in your web page:


<script src="https://www.w3schools.com/lib/w3.js"></script>
Try It Yourself » With CSS »

Or download w3.js and add a link to the file:


<script src="w3.js"></script>
Try It Yourself » With CSS »