Hi folks, we'd like to add some JS actions—adding content to fields—to an NationBuilder form on submit before the form validation/send is triggered. However binding on the form submit handler triggers after the NationBuilder actions and the data is not captured.

Is there an elegant/sanctioned way to hook into the event dispatcher? Essentially I need a callback before the form submits though NationBuilder XHR channels. Someone has a gist of how to do this, but the timing of this isn't correct (form still submits).