How to find indication of a Validation error (required=“true”) while doing ajax command

Question

I have a form inside a dialog which I close by clicking on commandbutton with ajax ,

like this

Answer 1

Two things 1) Checking for an error in the 'onevent' function

Surely you have a message tag for the mandatory field?

So you can check for the error-class something like

var message = $('#m-my-field-id');

if(message.hasClass('error-class'){
    //do this
}
else{
  //do that
}

2) The DOM isn't up to date on success

Yes, I can see the message on the page in Firefox, yet jQuery tells me it is not there.

I have found that using the smallest possible timeout is sufficient to fix this

setTimeout(
    function(){
    setErrorStyle(source.attr('id'));
    },
   1
);