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HTML | DOM Input DatetimeLocal readOnly Property

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  • Difficulty Level : Basic
  • Last Updated : 28 Jun, 2022

The Input DatetimeLocal readOnly property is used to set or return whether a datetimeLocal field should be read-only, or not. Once a field has been declared read-only, it cannot be further modified. However, the read-only field can be tabbed, highlighted and can be used for copying text. The HTML readonly attribute is reflected by the Input DatetimeLocal readOnly property.


  • To return the readOnly property:
  • To set the readOnly property:
datetimelocalObject.readOnly = true|false

Property Value:

  • true|false : It is used to specify whether the datetimeLocal field will be read-only or not. It is false by default.

Return Value : It returns a Boolean value that represents whether the Input DateTimeLocal field would be readOnly or not. 

Below program illustrates the DatetimeLocal readOnly property : 

Example: Setting a datetimeLocal field to read-only. 


<!DOCTYPE html>
      Input DatetimeLocal
      readOnly Property in HTML
        h1 {
            color: green;
        h2 {
            font-family: Impact;
        body {
            text-align: center;
      Input DatetimeLocal readOnly Property
    <br> Date Of Birth:
    <input type="datetime-local"
      To set the date time to read-only,
      double-click the "Set Read-Only" button.
    <button ondblclick="My_DatetimeLocal()">
      Set Read-Only
        function My_DatetimeLocal() {
              "Test_DatetimeLocal").readOnly =



After clicking the button:


Note : The <input type=”datetime-local”> element does not show any datetime field/calendar in Firefox. 

Supported Browsers:

  • Apple Safari
  • Internet Explorer
  • Firefox
  • Google Chrome
  • Opera

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