Change the minimum date and time:
document.getElementById("myLocalDate").min = "2006-05-05T16:15:23";
Click the button to change the value of the min attribute of the local datetime field.
<!DOCTYPE html> <html> <body> Date and time://w w w . ja v a 2s . c o m <input type="datetime-local" id="myLocalDate" min="2000-10-06T22:22:55" max="2014-11-16T21:25:33"> <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myLocalDate").min = "2006-05-05T16:15:23"; document.getElementById("demo").innerHTML = "The value of the min attribute was changed."; } </script> </body> </html>