[Javascript] Stopping default action

[moseley at hank.org (Bill Moseley)]

On Thu, Mar 30, 2006 at 06:48:32PM -0500, Mike Dougherty wrote:
> I just had a reason to research this myself...
> 
> http://www.gerd-riesselmann.net/archives/2005/03/a-firefox-javascript-bug
> 
> Read the author's thoughts describing your problem, then see the first 
> comment for the (obvious?) solution.  :)

Thanks.   I also came across that during my wild google chase for
ideas.

So I'm using this to set my ajax events:

    function updater( linkID, target ) {

        var el = $(linkID);
        var url = el.href;

        var my_update = function(e) {
            e.preventDefault();

            new Ajax.Updater( target, url,
                {
                    evalScripts: true,
                    method: 'get',
                    requestHeaders: ['X-Ajax-Updater', 'ajax_table']
                });

            return false;
        }


        Event.observe( linkID, 'click', my_update, 'false' );
    }

Not thrilled about using evalScripts.  It's needed to reset the events
after the ajax update (the update replaces those elements).  That
requires the ajax response to include a <script> section with fresh
calls to updater().

Right now none of my ajax updates change the links (or their ids) so
I'm thinking about saving each [linkID, target] on an array, and then
use the onComplete feature of Ajax.Updater to reload those events
after the ajax update.  That would avoid having to send <script> in
the ajax response.

But, then there's a risk I might call updater() again for a now
non-existent link, or add another event for a link that was not
updated by the ajax call -- ending up with multiple events.

Kind of a bother for just trying to get rid of my inline onclicks. ;)
Separation of behavior and structure, so they say...



-- 
Bill Moseley
moseley@xxxxxxxx