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HTML | DOM Input Password readOnly Property

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  • Difficulty Level : Basic
  • Last Updated : 25 Aug, 2022
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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 is a default value. 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. 

HTML




<!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. 

HTML




<!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 1+
  • Edge 12+
  • Firefox 1+
  • Opera 2+
  • Safari 1+

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