How to load JavaScript like a WordPress Master
Update: See Conditional Script Loading Revisited for WordPress 3.3 and newer.
If you’re involved in WordPress development, a challenge that you’re going to face sooner or later is how to include JavaScript files efficiently.
In this tutorial, I’m going to show you the best way to do that.
Let’s say you have a plugin that adds a custom shortcode. The shortcode needs some JavaScript code which requires jQuery.
If you’re just starting out with WordPress development, you might be tempted to write something like this: