jQuery: Listen to changes within a DIV and act accordingly

Question

I have a function that grabs an XML document and transforms it according to an XSL document. It then places the result into a div with the id laneconfigdisplay. What I want to do is, separate to the transformation logic, setup a jQuery change event for that div so I can tell when it has changed, and run some jQuery code.

I have tried the following, but it does not work!

$(document).ready(function()
{
    $('#laneconfigdisplay').change(function() {
        alert('woo');
    });
    //Do XML / XSL transformation here
});

<!-- HTML code here -->
<div id="laneconfigdisplay"></div>

What am I doing wrong?

Answer 1

The change event is limited to input, textarea & and select.

See http://api.jquery.com/change/ for more information.

Answer 2

http://api.jquery.com/change/

change does only work on input form elements.

you could just trigger a function after your XML / XSL transformation or make a listener:

var html = $('#laneconfigdisplay').html()
setInterval(function(){ if($('#laneconfigdisplay').html() != html){ alert('woo'); html = $('#laneconfigdisplay').html() } }, 10000) //checks your content box all 10 seconds and triggers alert when content has changed...

Answer 3

You can opt to create your own custom events so you'll still have a clear separation of logic.

Bind to a custom event:

$('#laneconfigdisplay').bind('contentchanged', function() {
  // do something after the div content has changed
  alert('woo');
});

In your function that updates the div:

// all logic for grabbing xml and updating the div here ..
// and then send a message/event that we have updated the div
$('#laneconfigdisplay').trigger('contentchanged'); // this will call the function above