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HTML | DOM Input DatetimeLocal readOnly Property

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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 =



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

Supported Browsers:

  • Google Chrome 20
  • Edge 12
  • Firefox 93
  • Opera 11
  • Safari 14.1

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Last Updated : 16 Jun, 2023
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