Validation failed javascript callback in JSF

Question

I have a template in which I can add a CSS error class to a div when the validation of a component has failed and it renders a pretty nice effect on the browser.

Now

Answer 1

Just let JSF/EL conditionally print the class based on FacesContext#isValidationFailed().

You only need to ensure that this element is covered by ajax update/render.

Another way would be hooking on the oncomplete event of an arbitrary PrimeFaces ajax based component. There's an args object available in the scope which in turn has a validationFailed property. E.g. or even .