Required field dependent on another field in PDF form

Question

I understand how to make a field required. But client wants a series of fields to be required only if a different field is answered yes. IOW, form begins with the question "Do you want me to call you?" followed by yes/no radio buttons. If the yes button is checked, then the phone number field must be required. If the no button is checked, then the phone number field must not be required.
Is this possible?
Ken Benson

Answer 1

Sure. In the Mouse Up event of each radio button, do something like:
// Mouse Up JavaScript for radio button;
getField("phone_number").required = event.target.value === "Yes" ? true : false;
where "Yes" is the button value of the Yes radio button and "phone_number" is the name of the phone number field. Adjust these to match what you're using.