Adding a change event on a hidden field

[nabab]

Hi,

I would like to be able to trigger a function when the value of a hidden field is changed through val() - and I want this event to be attached to the field itself, not to the val() action. As events are only users' triggered a hidden field doesn't trigger onchange natively. I have seen a lot of implementations using various plug-ins for mutation events, but was not very happy about them - they're heavy and I got some errors. Therefore I have added a line at the very end of the val() function: if(o.nodeName(this,"select")){ ... } else{ this.value=K; Here's my line: if(this.type=='hidden'){$(this).change()} } ...

This works fine in IE6, FF and Chrome - haven't tested on other browser.

The code I have added in the val() function is, I think, the most efficient way for being able to trigger the change function on any hidden field. However, as I love jQuery and hate to have my own twisted script instead of the standard, I wonder if people think it could be implemented in the core or if someone would have a better global solution to that problem...

Thanks!

[snover]

A programmatic change to a field is not considered a change for the purposes of event dispatching. (Trust me, it would break a lot of stuff if it were.) You will just need to raise an event yourself if you want one after a programmatic value change to a form field.