Vanilla JS

Vanilla JS is a fast, lightweight, cross-platform framework
for building incredible, powerful JavaScript applications.

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:

  • Facebook
  • Google
  • YouTube
  • Yahoo
  • Wikipedia
  • Windows Live
  • Twitter
  • Amazon
  • LinkedIn
  • MSN
  • eBay
  • Microsoft
  • Tumblr
  • Apple
  • Pinterest
  • PayPal
  • Reddit
  • Netflix
  • Stack Overflow

In fact, Vanilla JS is already used on more websites than jQuery, Prototype JS, MooTools, YUI, and Google Web Toolkit - combined.


Ready to try Vanilla JS? Choose exactly what you need!


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:

  1. <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
Vanilla JSdocument.getElementById('test-table');
Prototype JS$('test-table')
Ext JSdelete Ext.elCache['test-table']; Ext.get('test-table');

Retrieve DOM elements by tag name

Codeops / sec
Vanilla JSdocument.getElementsByTagName("span");
Prototype'span', document);
YUIYAHOO.util.Dom.getElementsBy(function(){return true;},'span');
Ext JSExt.query('span');
Dojodojo.query('span');, 'span', new Elements);

Code Examples

Here are some examples of common tasks in Vanilla JS and other frameworks:

Fade an element out and then remove it

Vanilla JSvar s = document.getElementById('thing').style; s.opacity = 1; (function fade(){(s.opacity-=.1)<0?s.display="none":setTimeout(fade,40)})();
jQuery<script src="//"></script> <script> $('#thing').fadeOut(); </script>

Make an AJAX call

Vanilla JSvar r = new XMLHttpRequest();"POST", "path/to/api", true); r.onreadystatechange = function () { if (r.readyState != 4 || r.status != 200) return; alert("Success: " + r.responseText); }; r.send("banana=yellow");
jQuery<script src="//"></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:

When powering your applications with Vanilla JS, feel free to use this handy button!