Drupal Add JavaScript Setting Example

This describes how to add a custom setting to the JavaScript Drupal.settings variable using PHP

Drupal 7

.module

  drupal_add_js(
    array(
      'lunch_box' => array(
        'soda' => 'sweet and bad',
        'burrito' => 'delicious and sometimes nutricious',
      ),
    ),
    array('type' =>'setting')
  );

.js

(function ($) {

  Drupal.behaviors.my_module = {
    attach: function (context, settings) {
      console.log(Drupal.settings.lunch_box.soda);
      console.log(Drupal.settings.lunch_box.burrito);
    }
  };

}(jQuery));

Drupal 6

drupal_add_js() example:

drupal_add_js(
    array(
      'lunch_box' => array(
        'soda' => 'sweet and bad',
        'burrito' => 'delicious and almost nutricious',
      ),
    ),
    'setting'
  );

Now we can access these variables defined by PHP in JavaScript once the page is ready and loaded:

alert(Drupal.settings.lunch_box.soda);
alert(Drupal.settings.lunch_box.burrito);

You should always place your custom variables in your own "lunch box", that way you don't pollute the Drupal.settings name space:

http://api.drupal.org/api/drupal/includes%21common.inc/function/drupal_add_js/6