Find out if a local datetime field is read-only or not:
var x = document.getElementById("myLocalDate").readOnly;
Click the button to find out if the local datetime field is read-only.
<!DOCTYPE html> <html> <body> <input type="datetime-local" id="myLocalDate" readonly> <button onclick="myFunction()">Test</button> <p id="demo"></p> <script> function myFunction() {/*from ww w . j av a2 s . co m*/ var x = document.getElementById("myLocalDate").readOnly; document.getElementById("demo").innerHTML = x; } </script> </body> </html>