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HTML | DOM Textarea readOnly Property
  • Difficulty Level : Basic
  • Last Updated : 15 Apr, 2019

The DOM Textarea readOnly Property is used to set or return that the text in the textarea should be readOnly or not. If it is readOnly then the content cannot be modifed but it can be copied.

Syntax:

  • It is used to return the readOnly property.
    textareaObject.readOnly
  • It is used to set the readOnly property.
    textareaObject.readOnly = true|false
  • Property Values:

    • true: It defines that the text area is readOnly.
    • false: It defines that the text area is not readOnly and can be changed.

    Return Value: It returns the value of readOnly property in the form of boolean value i.e. either true or false.

    Example-1: This example illustrates how to set the Textarea readonly property.






    <!DOCTYPE html>
    <html>
      
    <head>
        <title>DOM textarea readonly Property</title>
    </head>
      
    <body style="text-align:center">
        <h1 style="color: green;">
          GeeksforGeeks
      </h1>
        <h2>DOM textarea readonly Property</h2>
      
      
        <!-- Assigning id to textarea. -->
        <textarea id="GFG_ID" rows="3" cols="10" name="Geeks" >
    This text is wrapped in the text area field.
        </textarea>
        <br>
        
        <button onclick="myGeeks()">Submit</button>
        <p id = "GFG" > </p>
        <script>
            function myGeeks() {   
              // Set the readOnly property.
              var x = 
               document.getElementById(
               "GFG_ID").readOnly = true;
      
              document.getElementById("GFG").innerHTML = 
               "The value is set to " + x;
            }
        </script>
    </body>
      
    </html>

    
    

    Output:
    Before clicking on button:

    After clicking on button :

    Example-2 : This example illustrates how to return the Textarea readOnly property.




    <!DOCTYPE html>
    <html>
      
    <head>
        <title>DOM textarea readOnly Property</title>
    </head>
      
    <body style="text-align:center">
        
        <h1 style="color: green;">GeeksforGeeks</h1>
        <h2>DOM textarea readonly Property</h2>
      
        <!-- Assigning id to textarea. -->
        <textarea id="GFG_ID" rows="3" cols="10" name="Geeks" readonly>
    This text in the text area field is readOnly.
        </textarea>
        <br>
        
        <button onclick="myGeeks()">Submit</button>
        
        <p id="sudo"></p>
        
        <!-- Return the value of the readOnly property -->
        <script>
            function myGeeks() {
      
                var x = 
                document.getElementById(
                "GFG_ID").readOnly;
      
                document.getElementById("sudo").innerHTML = x;
            }
        </script>
    </body>
      
    </html>

    
    

    Output:

    Before clicking on button:

    After clicking on button:

    Supported Browsers: The browser supported by Textarea readOnly Property are listed below:

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

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