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<!DOCTYPE html>
<html><head><meta charset=utf-8 /><title>Mutation Observer test</title>  <script src="//cdn.jsdelivr.net/mootools/1.4.5/mootools-core-1.4.5-full-nocompat-yc.js"></script>  <script src="//rawgit.com/megawac/MutationObserver.js/master/MutationObserver.js"  ></script>  <script src="//rawgit.com/mootools/mootools-more/992345a159b357cf06635f3060ba3179e1bb7074/Source/Fx/Fx.Scroll.js"></script>  <script src="//rawgit.com/f/loremjs/ec971d2c7fc9a9b6a788095e0523a2794420f5c4/lorem.js"></script></head><body>  <div id="description">    <p>      This is a simple sample use of the Mutation Observer interface. Every 2 seconds a new articile will be created with some dummy lorem and the mutation observer will scroll the container according to content.    </p>  </div>  <div id="container"></div></body></html>

#container {

$(document).addEvent("domready", function() {

Console

:help
:reset - destroy state and start afresh :history - list current session history :load <url> - to inject new DOM :load <script_url> - to inject external library load also supports following shortcuts:
jquery, underscore, prototype, mootools, dojo, rightjs, coffeescript, yui.
eg. :load jquery :clear - to clear contents of the console :about jsconsole

Output Auto-run JS

Shortcut	Action
ctrl + [num]	Toggle nth panel
Require alt key, leaving cmd+1, 2 etc for tab switching.
ctrl + 0	Close focused panel
ctrl + enter	Re-render output. If console visible: run JS in console
Ctrl + l	Clear the console
ctrl + /	Toggle comment on selected lines
ctrl + ]	Indents selected lines
ctrl + [	Unindents selected lines
tab	Code complete & Emmet expand
ctrl + shift + L	Beautify code in active panel
ctrl + s	Save & lock current Bin from further changes
ctrl + shift + s	Open the share options
ctrl + y	Archive Bin
Complete list of JS Bin shortcuts

URL	Action
/	Show the full rendered output. This content will update in real time as it's updated from the /edit url.
/edit	Edit the current bin
/watch	Follow a Code Casting session
/embed	Create an embeddable version of the bin
/latest	Load the very latest bin (/latest goes in place of the revision)
/[username]/last	View the last edited bin for this user
/[username]/last/edit	Edit the last edited bin for this user
/[username]/last/watch	Follow the Code Casting session for the latest bin for this user
/quiet	Remove analytics and edit button from rendered output
.js	Load only the JavaScript for a bin
.css	Load only the CSS for a bin
Except for username prefixed urls, the url may start with http://jsbin.com/abc and the url fragments can be added to the url to view it differently.

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JS Bin features

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