HTML | DOM Input Radio disabled Property

Difficulty Level : Basic
Last Updated : 17 Oct, 2019

The DOM Input Radio disabled Property is used to set or return whether the Radio Button must be disabled or not. A disabled Radio Button is un-clickable and unusable. It is a boolean attribute and used to reflect the HTML Disabled attribute. It is usually rendered in grey color by default in all the Browsers.

Syntax:

It returns the disabled property.
```
radioObject.disabled
```
It is used to set the disabled property.
```
radioObject.disabled = true|false
```

Property Values:

true: It defines that the Input Radio Button is disabled.
False: It has a default value. It defines that the Radio Button is not disabled.

Return Value: It returns a boolean value which represents that the Radio Button is disabled or not.

Example-1: This Example illustrates how to return the Property.

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        body { 
            text-align: center; 
        } 
          
        h1 { 
            color: green; 
        } 
    </style> 
</head> 
  
<body> 
    <h1> 
      GeeksforGeeks 
  </h1> 
  
    <h2> 
      HTML DOM Input Radio Disabled 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").disabled; 
            
            document.getElementById( 
              "GFG").innerHTML = x; 
        } 
    </script> 
  
</body> 
  
</html> 

Output:
Before Clicking On Button:

After Clicking On Button :

Example-2: This Example illustrates how to set the Disabled Property.

<!DOCTYPE html> 
<html> 
  
<head> 
    <style> 
        body { 
            text-align: center; 
        } 
          
        h1 { 
            color: green; 
        } 
    </style> 
</head> 
  
<body> 
    <h1> 
      GeeksforGeeks 
  </h1> 
  
    <h2> 
      HTML DOM Input Radio Disabled 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").disabled = "false"; 
            
            document.getElementById( 
              "GFG").innerHTML = x; 
        } 
    </script> 
  
</body> 
  
</html> 