Core libraries

A quick overview with some of the Drupal core libraries.

To get a complete overview of all the core libraries, take a look inside core/core.libraries.yml.

• core/drupal

We need core/drupal in order to take advantage of the Drupal.behaviors.

• core/jquery

To include the Drupal core version of jQuery, we add core/jquery.

• core/jquery.once

A jQuery plugin allowing to only apply a function once to an element.

There are plenty more libraries in core.