DOM Enlightenment Book

by domenlightenment

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

//first event attached
document.querySelector('div').addEventListener('click',function(){
console.log('I get invoked because I was attached first');
},false);

//seond event attached
document.querySelector('div').addEventListener('click',function(event){
console.log('I get invoked, but stop any other click events on this target');
event.stopImmediatePropagation();
},false);

//third event attached, but because stopImmediatePropagation() was called above this event does not get invoked
document.querySelector('div').addEventListener('click',function(){
console.log('I get stopped from the previous click event listener');
},false);

//notice that the event flow is also cancelled as if stopPropagation was called too
document.body.addEventListener('click',function(){
console.log('What, denied from being invoked!');
},false);