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<!DOCTYPE html> <html> <body> <input type="datetime" id="myDatetime"><br><br> <button onclick="disableBtn()">Disable Datetime Field</button> <button onclick="undisableBtn()">Undisable Datetime Field</button> <p><strong>Note:</strong> input elements with type="datetime" do not show as any datetime field/calendar in any of the major browsers, except Safari.</p> <script> function disableBtn() { document.getElementById("myDatetime").disabled = true; } function undisableBtn() { document.getElementById("myDatetime").disabled = false; } </script> </body> </html>