Calendar refresh - hotel reservation

So I found this code working :
function(data) {
dp.events.list = data;
dp.update();
window.setTimeout(function(){location.reload()},3000);
}

But of course it will close editing window/table. Is there any other solution, how to refresh/update data from database without closing this window?

You can use the built-in autorefresh feature:
https://doc.daypilot.org/scheduler/autorefresh/

It will fire onAutoRefresh event in the specified interval. The execution is paused during drag and drop operations.

In the event handler you can update the scheduler events using .update():

dp.onAutoRefresh = function(args) {
  loadEvents();
};