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Timestamp on a change event in a Dropdown menu

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I have a details page with an update button where I would like to be able to update the value of a Text Field with the current date whenever a user changes the value of an option in a Dropdown menu and clicks update.

The code below below is not working. Any help will be very much appreciated.

Thank You.

function getT()


document.getElementById("EditRecordpatient_status").onchange == document.getElementById("EditRecordpatient_status_change_timestamp").value = '[@cb:Timestamp]';



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As I understood OP's inquiry, I think they wanted to submit the timestamp of the most recent update to the Dropdown, and not when the DataPage actually loaded.


Looking at the answers above, what the solutions do is assign '[@cbTimestamp]' to EditRecordpatient_status_change_timestamp everytime EditRecordpatient_status is updated.

Do note, though that [@cbTimestamp] is a STATIC value once the DataPage has been rendered. Meaning, it's value is the current timestamp when the DataPage is loaded. It does not change after then, even if the HTML 'change' event is emitted.


The answer to the original question would be:


  var dropdown = document.querySelector('[id*=EditRecordpatient_status]')
  var tstamp = document.querySelector('[id*=EditRecordpatient_status_change_timestamp]')
  dropdown.onchange = function() {
    var dt = new Date();
    tstamp.value = `${dt.toLocaleDateString()} ${dt.toLocaleTimeString()}`





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