DOM Enlightenment Book

HTML

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





























<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

var div = document.querySelector("div");

var cheer = document.createEvent("CustomEvent");

div.addEventListener(
    "goBigBlue",
    function(e) {
        console.log(e.detail.goBigBlueIs);
    },
    false
);

cheer.initCustomEvent("goBigBlue", true, false, { goBigBlueIs: "its gone!" });

div.dispatchEvent(cheer);