It is neither a module nor a theme that provides jQuery, it's Drupal core: core/jquery is the dependency we want to declare. So lets give some context through some basic keys and well go on. Most of these cases can be satisfied with fixed javascript in a file plus added settings. Web page addresses and email addresses turn into links automatically. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Drupal 9 add inline JavaScript to a page programmatically This tutorial is only for people related to the Drupal backend. detach: As when adding, a function is provided to be executed when the behaviour is removed from the behaviour log. If we'd like to pass computed values 'foo' and 'baz'from PHP to ourexample's JavaScript, we could do: Then cuddly-slider.js will be able to access drupalSettings.fluffiness.cuddlySlider.fooand drupalSettings.fluffiness.cuddlySlider.baz, which will have values of 'bar'and 'qux' respectively. Furthermore, this resource can be used in a generic way (for example, for all pages): In this case it is recommended to specify metadata to facilitate the caching of the new change, specifically if the aggregation operation of the new library depends on conditions, for example: Lets take a closer look at the rules of use and integration of JavaScript code in a Drupal project. Which ones are being executed at that moment. See: flaviocopes.com/javascript-iife to understand better this important concept. Click Save. If it has been useful to you, share it using the share of this site, putting a simple tweet. You want to put these in either a custom block or even directly in a Twig template. Imagine that you have to integrate JavaScript code into your Drupal project… Where do you start? For some advanced use cases like detecting 3rd party libraries that need to be downloaded manually, and then exposing those as Drupal asset libraries (think Libraries API module) you want to be able to still use PHP code to register libraries using some additional logic. From the former callback, only two lines are interesting: the creation of a new AjaxResponse, using the related class: api.drupal.org/class/AjaxResponse and the load of a new command for AJAX, using the action commands defined in the AJAX API of Drupal: drupal.org/ajax-api/core-ajax-callback-commands. On the other hand, we have a property called #attached that offers us a set of already defined sub-properties that allow us to attach resources of different nature to any render array we are using (a controller response, a form build, etc): We will come back to some of these cases in following sections, But for more info about the processing of attached resources, You can visit the official documentation in Drupal.org: public function HtmlResponseAttachmentsProcessor.
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