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HTML | DOM Input Month readOnly Property
  • Difficulty Level : Basic
  • Last Updated : 18 Mar, 2019

The DOM Input Month readOnly property in HTML DOM is used to set or return whether the Input Month Field should be read-only or not.
It can be copied but can’t be modified.

Syntax:

  • It returns the readOnly property.
    monthObject.readOnly
  • It is used to set the readOnly property.
    monthObject.readOnly = "true|false"

Property Values:

  • true: It sets the readOnly property of Month field.
  • false: It is the default value. It defines the Month field is not read-only.

Return Value: It returns a boolean value which represents the Month field is read-only or not.

Example-1: This example returns the Input Month readOnly property.






<!DOCTYPE html>
<html>
  
<head>
    <title>
     HTML DOM Input Month readOnly Property
    </title>
</head>
  
<body style="text-align:center;">
  
    <h1>GeeksForGeeks</h1>
  
    <h2>
      DOM Input Month readOnly Property
  </h2>
    <form id="myGeeks">
        <input type="month" 
               id="month_id" 
               name="geeks" 
               readOnly>
    </form>
    <br>
    <button onclick="myGeeks()">
      Click Here!
  </button>
  
    <p id="GFG" 
       style="font-size:20px;">
  </p>
  
    <!-- Script to return
      the readOnly property-->
    <script>
        function myGeeks() {
            
            var gfg = 
                document.getElementById(
                  "month_id").readOnly;
            
            document.getElementById(
              "GFG").innerHTML = gfg;
        }
    </script>
</body>
  
</html>

Output
Before clicking on the button:

After clicking on the button:

Example-2: This Example illustrates how to set or change the readOnly property.




<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML DOM Input Month readOnly Property
    </title>
</head>
  
<body style="text-align:center;">
  
    <h1>GeeksForGeeks</h1>
  
    <h2>DOM Input Month readOnly Property</h2>
    <form id="myGeeks">
        <input type="month" 
               id="month_id" 
               name="geeks" 
               readOnly>
    </form>
    <br>
    <button onclick="myGeeks()">
      Click Here!
  </button>
  
    <p id="GFG" 
       style="font-size:20px;">
  </p>
  
    <!-- Script to set the 
     readOnly Property-->
    <script>
        function myGeeks() {
            
            var gfg = 
                document.getElementById(
                  "month_id");
            gfg.readOnly = false;
            var g = gfg.readOnly;
            
            document.getElementById(
              "GFG").innerHTML = g;
        }
    </script>
</body>
  
</html>

Output:
Before clicking on the button:

After clicking on the button:

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

  • Google Chrome
  • Internet Explorer 10.0 +
  • Firefox
  • Opera
  • Safari

Note: In Firefox, the input type=”month” element does not show any date field or calendar.




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