The purpose of this hook method is to help provide a separation of concerns between CSS and JavaScript.

Typically class names are used to attach JavaScript to HTML elements. Using a separate data-hook attribute helps to protect the scripting from CSS changes.

With the following example toggle button for a menu, we can hook on to the data-hook attribute.

Toggle Nav Menu

<ul>
<li><a href="/">West Philadelphia</a></li>
<li><a href="/cab">Cab Whistling</a></li>
<li><a href="/throne">Throne Sitting</a></li>
</ul>