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Vanilla JS is a fast, lightweight, cross-platform framework
for building incredible, powerful JavaScript applications.
Introduction
The Vanilla JS team maintains every byte of code in the framework and works hard each day to make sure it is small and intuitive. Who's using Vanilla JS? Glad you asked! Here are a few:
- YouTube
- Yahoo
- Wikipedia
- Windows Live
- Amazon
- MSN
- eBay
- Microsoft
- Tumblr
- Apple
- PayPal
- Netflix
- Stack Overflow
In fact, Vanilla JS is already used on more websites than jQuery, Prototype JS, MooTools, YUI, and Google Web Toolkit - combined.
Download
Ready to try Vanilla JS? Choose exactly what you need!
Core Functionality
Final size: 0 bytes uncompressed, 25 bytes gzipped. Show human-readable sizes
Testimonials
Getting Started
The Vanilla JS team takes pride in the fact that it is the most lightweight framework available anywhere; using our production-quality deployment strategy, your users' browsers will have Vanilla JS loaded into memory before it even requests your site.
To use Vanilla JS, just put the following code anywhere in your application's HTML:
<script src="path/to/vanilla.js"></script>
When you're ready to move your application to a production deployment, switch to the much faster method:
That's right - no code at all. Vanilla JS is so popular that browsers have been automatically loading it for over a decade.
Speed Comparison
Here are a few examples of just how fast Vanilla JS really is:
Retrieve DOM element by ID
| Codeops / sec | |
| document.getElementById('test-table'); | 12,137,211 |
| dojo.byId('test-table'); | 5,443,343 |
| $('test-table') | 2,940,734 |
| delete Ext.elCache['test-table']; Ext.get('test-table'); | 997,562 |
| $jq('#test-table'); | 350,557 |
| YAHOO.util.Dom.get('test-table'); | 326,534 |
| document.id('test-table'); | 78,802 |
Retrieve DOM elements by tag name
| Codeops / sec | |
| document.getElementsByTagName("span"); | 8,280,893 |
| Prototype.Selector.select('span', document); | 62,872 |
| YAHOO.util.Dom.getElementsBy(function(){return true;},'span'); | 48,545 |
| Ext.query('span'); | 46,915 |
| $jq('span'); | 19,449 |
| dojo.query('span'); | 10,335 |
| Slick.search(document, 'span', new Elements); | 5,457 |
Code Examples
Here are some examples of common tasks in Vanilla JS and other frameworks:
Fade an element out and then remove it
| var s = document.getElementById('thing').style; s.opacity = 1; (function fade(){(s.opacity-=.1)<0?s.display="none":setTimeout(fade,40)})(); |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script> <script> $('#thing').fadeOut(); </script> |
Make an AJAX call
| var r = new XMLHttpRequest(); r.open("POST", "path/to/api", true); r.onreadystatechange = function () { if (r.readyState != 4 || r.status != 200) return; alert("Success: " + r.responseText); }; r.send("banana=yellow"); |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script> <script> $.ajax({ type: 'POST', url: "path/to/api", data: "banana=yellow", success: function (data) { alert("Success: " + data); }, }); </script> |
Further Reading
For more information about Vanilla JS:
- check out the Vanilla JS documentation
- read some books on Vanilla JS
- or try out one of the many Vanilla JS plugins.
When powering your applications with Vanilla JS, feel free to use this handy button! 
