Drupal 6 JavaScript and jQuery - Ebook-Cours.com

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Chapter 8
3. To add an individual setting to the Drupal.settings array. We have seen
the Drupal.settings.basePath variable in previous chapters. This extends
that same object.
Unfortunately, the arguments are different in each case and therefore mean different
things. Here, we have used the simplest case as we are simply adding a file. The
syntax for doing this from within a module is drupal_add_js($filename). As we
can see, the drupal_add_js() function needs to know the path to the filename.
In the above code snippet, this loads each script file.
In the next project, we will see how drupal_add_js() can be used to add settings.
The three uses of this function are documented in the Drupal API at
http://api.drupal.org/api/function/drupal_add_js/6.
That is all there is to our loader. Now, every script that we add to the .info file using
the scripts[] directive will automatically be loaded on every page request. At the
beginning of this project, we created a module that fired an alert() every time a page
loaded. Now that our module is complete, we should be able to test the loader by
loading a page on our site. Here's a screenshot of what that should look like:
If the alert box pops up, we know that our script is being loaded.
The module we just created provides a way for integrating JavaScript files into
Drupal, without relying on a theme, and without requiring any additional code.
With this single module, we could add all of the scripts created since Chapter 3. The
one in Chapter 2 relied a little too heavily on a template file to be used outside of a
theme. No additional PHP would be necessary.
On the other hand, this module doesn't exploit the possibility of using PHP code
to inform JavaScript. In the next project, we will see how we can use PHP code in
modules to pass information on to a JavaScript tool.
This material is copyright and is licensed for the sole use by Richard Ostheimer on 18th June 2009
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