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<!DOCTYPE html> <html> <body> <input type="time" id="myTime"><br><br> <button onclick="disableBtn()">Disable Time Field</button> <button onclick="undisableBtn()">Undisable Time Field</button> <script> function disableBtn() { document.getElementById("myTime").disabled = true; } function undisableBtn() { document.getElementById("myTime").disabled = false; } </script> </body> </html>