Change the maximum date:
document.getElementById("myDate").max = "2014-01-01";
Click the button to change the value of the max attribute of the date field.
<!DOCTYPE html> <html> <body> Date://from w ww . jav a 2 s . c o m <input type="date" id="myDate" name="bday" min="1980-01-01" max="2000-01-01"> <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myDate").max = "2014-01-01"; document.getElementById("demo").innerHTML = "The value of the max attribute was changed."; } </script> </body> </html>