Question

Hi I have a page with a navigation menu on the left and when any link
on this menu is clicked , an Ajax get call is sent to the server and
the right side gets updated with the new page.

How I am currently doing this is by creating 2 columns, the left col
contains the navigation link and the right col contans a div named the
content which has a dojotype of dojox.layout.ContentPane.Now when the
data is received from the server, I change its content like this

dijit.byId("thecontent").setContent=data

Now when I click on the navigation link , the right side gets
displayed properly(this page has dijits and also some scripts to
handle onclick events). But firebug returns an error saying

"Tried to register widget with id==thecontent but that id is already registered"

my main dojo include looks like this:-

<script type="text/javascript" src="http://o.aolcdn.com/dojo/1.5/dojo/dojo.xd.js"djConfig="parseOnLoad:false"></script>

I do a dojo.parser.parse() in the function dojo.addOnLoad like this:-

 dojo.addOnLoad(function(){
     dojo.require("dijit.form.Button");
     dojo.require("dijit.form.Textarea");
     dojo.require("dijit.form.ValidationTextBox");
     dojo.require("dojox.layout.ContentPane");
     dojo.require("dijit.Editor");
   dojo.addOnLoad(function(){
        dojo.parser.parse();
        sendgetrequest();//this initiates the xhrget request
        dojo.removeClass(dojo.byId("doc3"),"hiddendiv");
        }

);
    })

I am also unable to run any scripts in this new loaded page. No onclick event is working, just the dijit widgets are displayed…

Answer 1

The error means, as Ken already said, that you are creating a dijit with an id that already exists. My guess would be that you load the AJAX content in the right panel without destroying the old right panel first.

Try calling destroyRecursive on the main dijit container in the right panel before loading the new content. Also, if you do not need to set the id of the dijit, you just might drop the id (but that would leave a memory hole because the old dijits are not destroyed).