Reasoned answer

The functions available on reasoned answers API are:

Function	Description
getPopup()	Retrieves response popup
registerForFieldChange(String fieldName, function callback)	Allows subscription to field modification in response popup
getReasonedAnswerId()	Retrieves action identifier
getTasks()	Retrieves the list of tasks associated with the response

Examples:

JSAPI.get().registerForReasonedAnswerOpen(function (reasonedAnswerAPI, reasonedAnswerId) {
    console.log("Opened reasoned answer Id: " + reasonedAnswerAPI.getReasonedAnswerId());
});

JSAPI.get().getReasonedAnswerAPI(<answer identifier>).registerForFieldChange("Comments", function(fieldName, fieldValue) {
    console.log("Value of " + fieldName + " changed to: " + fieldValue);
});

Note: In this part, the variable reasonedAnswerId is used to identify the response just opened

Please note: When displaying several reasoned answers forms, it may be necessary to access a particular form: JSAPI.get().getReasonedAnswerAPI(<answer identifier>).