DOM Enlightenment Book

by peroli

HTML

<script src="https://getfirebug.com/firebug-lite-debug.js"></script>
<ul>
  <li class="liClass">Hello</li>
  <li class="liClass">big</li>
  <li class="liClass">bad</li>
  <li class="liClass">world</li>
</ul>

JavaScript

//all of the methods below create/select the same list of <li> elements from the DOM
console.log(document.querySelectorAll('li'));
console.log(document.getElementsByTagName('li'));
console.log(document.getElementsByClassName('liClass'));