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<html><body><form action="/action_page.php"> Time: <input type="time" id="myTime" name="usr_time" required> <input type="submit"></form><p>Click the "Try it" button to find out if the time field must be filled out before submitting the form.</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction() { var x = document.getElementById("myTime").required; document.getElementById("demo").innerHTML = x;}</script></body></html>