From this demo you can learn how to use Zapatec.Form events.
First checkbox triggers function to toggle "Personal information" block visiblity. This is same as conditional fields functionality. It uses booleanValueChanged event which invokes when checkbox changes its value.
Second one uses valueChanged event - it is invoked after some field changes its value.
Third block shows complex work with some of internal Zapatec.Form functions. It uses valueChanged event. Note that it is added using eventListeners config option.
Last block shows how to implement simple wizard functionality - it is not allowed to click next step until some conditions are not met.
Other functions listen to all form events and display log in the floating window to the right.