DOM Enlightenment Book

by peroli November 08, 2018

HTML

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

JavaScript

var elementDiv = document.querySelector('button');

// property event handler 
elementDiv.onclick = function(){console.log('I\'m first, but I get overridden/replaced')};

//overrides/replaces the prior value
elementDiv.onclick = function(){console.log('I win')};

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DOM Enlightenment Book

HTML

JavaScript

Please Whitelist JSFiddle in your content blocker.

Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

Private collections and fiddles

Console