Drupal 6 JavaScript and jQuery - Ebook-Cours.com

Drupal Behaviors
This shows the complete contents of one specific block. We are more interested in the
generic structure that all blocks share. To see this, we can simplify the previous code
to something like this:
Title
Content
That's about all there is to a generic block. Every block has three structural pieces,
and these are identified by class. There's a block that contains a title and
some content.
Returning to our code, let's look at the behavior function:
Drupal.behaviors.slideBlocks = function (context) {
$('.block:not(.slideBlocks-processed)', context)
};
.addClass('slideBlocks-processed')
.each(function () {
$(this).children(".title").toggle(
function () {
$(this).siblings(".content").slideUp("slow");
},
function () {
$(this).siblings(".content").slideDown("slow");
});
});
Our behavior first tries to find all of the blocks that haven't already been processed
by this behavior. The query to do this is: .block:not(.slideBlocks-processed).
As we saw in the previous HTML, the class block indicates that a piece of HTML
is a block.
Again, we want to prevent our behavior from being run twice on the same
element. To do this, we write the behavior in such a way that it attaches its own
class to an element once the element has been processed. In this case, the class is
slideBlocks-processed, following one of the conventions used when
defining behaviors.
[ 104 ]
This material is copyright and is licensed for the sole use by Richard Ostheimer on 18th June 2009
2205 hilda ave., , missoula, , 59801