вот как это работает:
if (boEventClicked.type === "Подарок") {
//restore UOC event to editable when attendance event is set to 'Present'
var aDate = moment(boEventClicked.start, "MM/DD/YYYY");
$.each($('#calendar').fullCalendar('clientEvents'),
function (idx, eventitem) {
var uDate = moment(eventitem.start, "MM/DD/YYYY");
if ((moment(uDate).isSame(aDate)) && eventitem.type === 'UOC') {
eventitem.readonly = false;
$('#calendar').fullCalendar('updateEvent', eventitem);
}
});
return;
}