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<html><body>Birthday: <input type="datetime-local" id="myLocalDate" name="bdaytime"><p>Click the buttons to display and/or change the value of the name attribute of the local datetime field.</p><button onclick="display()">Display name</button><button onclick="change()">Change name</button><p><strong>Note:</strong> input elements with type="datetime-local" do not show as any datetime field/calendar in Firefox.</p><script>function display() { var x = document.getElementById("myLocalDate").name; alert("The name of the local datetime field is: " + x);}function change() { var x = document.getElementById("myLocalDate").name = "newDatetimeName"; alert ("The name was changed to: " + x);}</script></body></html>