HTML | DOM Input Radio defaultChecked Property

The DOM Input Radio defaultChecked Property in HTML DOM is used for returning the default value of the checked attribute. It returns a true if the radio button is checked by default otherwise it returns false.

Syntax:

radioObject.defaultChecked

Below Program illustrates how to return the Property.
Example:



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<!DOCTYPE html>
<html>
  
<head>
    <style>
        body {
            text-align: center;
        }
          
        h1 {
            color: green;
        }
    </style>
</head>
  
<body>
    <h1>
      GeeksforGeeks
  </h1>
  
    <h2>
      HTML DOM Input Radio default Checked Property
  </h2>
  
    <form id="myGeeks">
        Radio Button:
        <input type="radio" 
               checked=true 
               id="radioID" 
               value="Geeks_radio" 
               name="Geek_radio" 
               disabled>
        <br>
        <br>
    </form>
    <button onclick="GFG()">
        Click!
    </button>
    <p id="GFG"
       style="font-size:25px;
              color:green;">
  </p>
    <script>
        function GFG() {
  
            // Accessing input element 
            // type="radio" 
            var x =
                document.getElementById(
                  "radioID").defaultChecked;
            
            document.getElementById(
              "GFG").innerHTML = x;
        }
    </script>
  
</body>
  
</html>

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Output:
Before Clicking On Button:

After Clicking On Button:

Supported Browsers: The browser supported by DOM input Radio defaultChecked property listed below:

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


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Improved By : shubham_singh



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