From a Form, I need to catch a particular field value BEFORE the form is submitted so that I can compare it to the submitted value and do something with the difference (ie original value was 20, new value is 15, I am going to do something with 5).
I can do the After, but not the Before.
I am listening on the view render, but there is no record yet for me to grab. Am I listening to the wrong thing? This is a single record form, not a inline-editable table.
$(document).on('knack-view-render.view_336', function(event, view, data) {
//Pausing to let the records load doesn't help
var MyOriginalPortion = record["field_100"]; // THIS LINE DOES NOT WORK
console.log(MyOriginalPortion);
$(document).on('knack-form-submit.view_336', function(event, view, record) {
var PaymentRecordID = record.id;
var ThisActivityID = record["field_199"]; // ActivityID field in Payments Table
var MyNewPortion = record["field_100"]; // THIS LINE WORKS FINE
console.log("Mew Portion: " + MyNewPortion);
// bla bla bla