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<!DOCTYPE html>
<html>
<body>
<form action="https://www.w3schools.com/action_page.php">
  Date: <input type="datetime-local" id="myLocalDate" name="date" required>
  <input type="submit">
</form>
<p>Click the "Try it" button to find out if the local datetime field must be filled out before submitting the form.</p>
<button onclick="myFunction()">Try it</button>
<p><strong>Note:</strong> input elements with type="datetime-local" do not show as any datetime field/calendar in Firefox.</p>
<p id="demo"></p>
<script>
function myFunction() {
  var x = document.getElementById("myLocalDate").required;
  document.getElementById("demo").innerHTML = x;
}
</script>
</body>
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_datetime-local_required by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 18:16:54 GMT -->
</html>