Updating records in numerous date fields

[clc123]

Hello. Hope someone can assist. Totally new to javascript and the platform and testing out the platform for future projects since I saw that this is supposed to be no coding involved . However, I have trouble working with the date time entries since there I do not know how the users of my dataform can input separately the time and date.

I need the dataform to retrieve existing records through search button, show the existing record, and allow the user to update that record which contains activities, their start date with time and end date with time, compute the duration between the two time per activity. 

After clicking the update button, the date and time entries are concatenated and shown as display only with the virtual field for the Date Hour and Minutes cleared up.

Been toying with the script below I copied from somewhere else to no avail. Hoping for your assistance.

 

Thanks

 

 

<script>
document.getElementsById('Mod0EditRecord').onclick = function(){

var date =
document.getElementById('cbParamVirtual1').value;
if(date == "")
date = "1/1/2011";

var hour = parseFloat(document.getElementById('cbParamVirtual2').value;
if(hour == "")
hour = "00";

var minute = document.getElementById('cbParamVirtual3').value;
if(minute == "")
minute = "00";

document.getElementById('EditRecordTime_Start_Act1').value = date + " " + hour +":"+ minute;
};
</script>

[Kurumi]

Hi @clc123 - Is this from this article? https://howto.caspio.com/tech-tips-and-articles/common-customizations/separate-input-fields-for-datetime-parts/

If yes, what is your expected output? Are you receiving any errors on this script?