Can I prevent events with conflict time?

Question

How can I prevent events with conflict time? Is there any variable to set up?

Answer 1

Correct overlap checking.

        eventDrop: function(event, dayDelta, minuteDelta, allDay, revertFunc, jsEvent, ui, view) {
            /// deny overlap of event
            var start = new Date(event.start);
            var end = new Date(event.end);

            var overlap = $('#calendar').fullCalendar('clientEvents', function(ev) {
                if( ev == event) {
                    return false;
                }
                var estart = new Date(ev.start);
                var eend = new Date(ev.end);

                return (
                    ( Math.round(start) > Math.round(estart) && Math.round(start) < Math.round(eend) )
                    ||
                    ( Math.round(end) > Math.round(estart) && Math.round(end) < Math.round(eend) )
                    ||
                    ( Math.round(start) < Math.round(estart) && Math.round(end) > Math.round(eend) )
                );
            });
            if (overlap.length){
                revertFunc();
                return false;
            }
        }