HTML | DOM Input Time readOnly Property

Last Updated : 14 Dec, 2021

The DOM Input Time readOnly Property in HTML DOM is used to set or return whether the Time Field should be read-only or not. It means that a user can not modify or changes a content already present in a particular Element (However, a user can tab to it, highlight it, and copy the text from it) whereas a JavaScript can be used to change the read-only value and make the input field editable. Syntax:

It is used to return the readOnly property.
```
timeObject.readOnly
```
It is used to set the readOnly property.
```
timeObject.readOnly = true|false
```

Property Values:

true: It defines that Time field is read only.
false: It defines that Time field is not read only. It is false by default.

Return Value: It returns a boolean value which represent the Time field is read only or not. Example-1: This example illustrates how to return the property.

html

<!DOCTYPE html>
<html>

<head>
    <title>
        DOM Input Time readOnly Property
    </title>
</head>

<body>
    <center>
        <h1 style="color:green;"> 
                GeeksForGeeks 
            </h1>

        <h2>
          DOM Input Time readOnly Property
      </h2>

        <label for="uname"
               style="color:green">
            <b>Enter time</b>
        </label>

        <input type="time" 
               id="gfg"
               placeholder="Enter time"
               readonly>

        <br>
        <br>

        <button type="button" 
                onclick="geeks()">
            Click
        </button>

        <p id="GFG"
           style="font-size:24px;
                  color:green;">
      </p>

        <script>
            function geeks() {
              
                var link = 
                    document.getElementById(
                      "gfg").value;
              
                document.getElementById(
                  "GFG").innerHTML = link;
            }
        </script>
    </center>
</body>

</html>

Output: Before Clicking On Button:

After Clicking On Button:

Example-2: This Example illustrates how to set the Property.

html

<!DOCTYPE html>
<html>

<head>
    <title>
        DOM Input Time readOnly Property
    </title>
</head>

<body>
    <center>
        <h1 style="color:green;"> 
                GeeksForGeeks 
            </h1>

        <h2>
          DOM Input Time readOnly Property
      </h2>

        <label for="uname"
               style="color:green">
            <b>Enter time</b>
        </label>

        <input type="time" 
               id="gfg"
               placeholder="Enter time" 
               step="5"
               readonly>

        <br>
        <br>

        <button type="button" 
                onclick="geeks()">
            Click
        </button>

        <p id="GFG"
           style="font-size:24px;
                  color:green'">
      </p>

        <script>
            function geeks() {
              
                var link = 
                    document.getElementById(
                  "gfg").readOnly = "false";
              
                document.getElementById(
                  "GFG").innerHTML = link;
            }
        </script>
    </center>
</body>

</html>