DOM Enlightenment Book

HTML

<script src="https://getfirebug.com/firebug-lite-debug.js"></script>
<head>

<style id="styleElement">
    body{background-color:#ccc;}
</style>

</head>
<body>
    gola
</body>
































<h4 style="border-top:1px solid #ADADAD;padding-top:20px;margin-top:20px;"><strong>&larr; Code Example from <a href="http://www.domenlightenment.com/" target="_blank">DOM Enlightenment Book</a> by <a href="http://www.codylindley.com" target="_blank">Cody Lindley</a></strong></h4>

<p style="background-color:#fff">JavaScript code is executed on page load. Click the "Run" button in the top bar to re-run the JavaScript code. All <code>console.log()'s</code> are logged to the <a href="http://getfirebug.com/firebuglite" target="_blank">Firebug Lite</a> console below &darr;.</p>

JavaScript

//logs function CSSStyleSheet() { [native code] } 
console.log(document.querySelector('#styleElement').sheet.constructor);

//logs function CSSStyleRule() { [native code] }
console.log(document.querySelector('#styleElement').sheet.cssRules[0].constructor);