Javascript functions - replacement of calworkdays

...number40' field.
But my problem is that the form doesn't calculate this on the first input of the dates (because it's an on-change event, it only works when the fields are changed - after the first input).
Do you have any suggestions how to solve my problem?
Thank you in advance... BR, Bojan

@bojanb - Give a try in calling the above script in onload function while loading the page.

We have previously tried calling this function when loading the page:
var dateID = 'date2';
var dateID2 ='date1';
var AbsenceCA = 'dropdown21';


$('#date_date_' + dateID2 + '_valueDateSingle_fd_component_' + window.FormDesigner.runtimeNamespace + dateID2 +'_').trigger('change');


$('#date_date_' + dateID + '_valueDateSingle_fd_component_' + window.FormDesigner.runtimeNamespace + dateID +'_').trigger('change');

var todate = window.FormAPI.getValue("To_date_value").id;
window.FormAPI.setValue('date2',todate);


var fromdate = window.FormAPI.getValue("From_date_value").id;
window.FormAPI.setValue('date1',fromdate);

But when loading the page, the process goes into a long loop (reloading the page over and over...because the onload function triggers the onchange event of the date input fields...
Initially, I want the values to be empty so that the user must input them (so that there are no mistakes when filling the form).
Do you have any other idea or advice?
Thank you again... BR

@bojanb: Instead of OnChange Event, try to trigger with oninput (or) onmousemove Event.

The Date field only has change event. I tried using the "input" trigger in the load function (in the code that I previously wrote), but still - nothing happened.