HTML DOM Input Checkbox Disabled Property

HTML Web Development Front End Technology

The HTML DOM Input Checkbox disabled property sets/returns whether Input Checkbox is to be enabled or disabled.

Syntax

Following is the syntax −

Returning boolean value − true/false

inputCheckboxObject.disabled

Setting disabled to booleanValue

inputCheckboxObject.disabled = booleanValue

Boolean Values

Here, “booleanValue” can be the following −

booleanValue	Details
true	It defines that the checkbox is disabled.
false	It defines that the checkbox is not disabled and it is also the default value.

Example

Let us see an example of Input Checkbox disabled property −

Live Demo

<!DOCTYPE html>
<html>
<head>
<title>Student Details</title>
</head>
<body>
<form>
<div>
<input id="fullname" placeholder="eg: John Doe" type="text" name="fullname">
</div>
<div>
Biology: <input class="category" type="checkbox" value="Biology" name="subject" disabled>
Mathematics: <input class="category" type="checkbox" value="Mathematics" name="subject" disabled>
Physics: <input class="category" type="checkbox" value="Physics" name="subject" disabled>
Psychology: <input class="category" type="checkbox" value="Psychology" name="subject" disabled>
</div>
</form>
<button onclick="enableCheckboxes()">Enable Subjects</button>
<script>
   function enableCheckboxes(){
      var enableCheckboxes = document.getElementsByClassName("category");
      for (var i = 0; i < enableCheckboxes.length; i++) {
         enableCheckboxes[i].disabled = false;
      }
   }
</script>
</body>
</html>