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HTML | DOM Input Password readOnly Property
  • Difficulty Level : Basic
  • Last Updated : 08 Mar, 2019

The DOM Input Password readOnly Property is used to set or return whether a Password Field should be read-only or not. It means that a user can not modify or changes the 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.
    passwordObject.readOnly
  • It is used to Set the readOnly property.
    passwordObject.readOnly = true|false

Property Values:

  • true: It defines that password field is read only.
  • false: It defines that password field is not read only.

Return Value: It returns a boolean value which represent the password field is read only or not.

Example-1: This example illustrates how to return the property.






<!DOCTYPE html> 
<html
  
<body style="text-align:center;"
  
    <h1 style="color:green;"
            GeeksForGeeks 
        </h1
  
    <h2>DOM Input Password readOnly Property</h2
       
   <form id="myGeeks">
     Password: <input type="password"
        id="myPsw"
          readonly>
         </form>
    <br><br>
    <button onclick="myFunction()"
    Click Here! 
</button
  
    <p id="demo" style="color:green;font-size:20px;"></p
  
    <script
        function myFunction() { 
            var x = 
            document.getElementById( 
            "myPsw").readOnly
              
            document.getElementById( 
            "demo").innerHTML = x; 
        
    </script
  
</body
  
</html>                    


Output:

Before clicking on the button:

After clicking on the button:

Example-2 : This example illustrates how to set the property.




<!DOCTYPE html> 
<html
  
<body style="text-align:center;"
  
    <h1 style="color:green;"
            GeeksForGeeks 
        </h1
  
    <h2>DOM Input Password readOnly Property</h2
       
   <form id="myGeeks">
     Password: <input type="password"
        id="myPsw"
          readonly>
         </form>
    <br><br>
    <button onclick="myFunction()"
    Click Here! 
</button
  
    <p id="demo" style="color:green;font-size:20px;"></p
  
    <script
        function myFunction() { 
            var x = 
            document.getElementById( 
            "myPsw").readOnly = false;
              
            document.getElementById( 
            "demo").innerHTML = x; 
        
    </script
  
</body
  
</html>                    


Output

Before clicking on the button:

After clicking on the button:

Supported Browsers: The browser supported by DOM input Password readOnly Property are listed below:

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

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