CSS | :indeterminate Selector

Last Updated : 04 Jan, 2019

The :indeterminate selector in CSS is used to select any form elements that are in indeterminate state i.e a state that is neither checked nor unchecked.

Elements targeted by this selector are:

<input = “checkbox”> elements whose indeterminate property is set to true by JavaScript
<input = “radio”> elements, when all radio buttons with the same name value in the form are unchecked
<progress> elements in an indeterminate state

Example-1:

<!DOCTYPE html>
<html>
  
<head>
    <title>
        CSS :indeterminate selector
    </title>
    <style>
        input:indeterminate + label {
            background: green;
            color: white;
            padding: 4px;
        }
          
        input:indeterminate {
            box-shadow: 0 0 1px 1px green;
        }
    </style>
</head>
  
<body style="text-align: center;">
    <h1 style="color:green;">
            GeeksforGeeks
        </h1>
    <h2>
            CSS :indeterminate selector
        </h2>
    <div>
        <input type="checkbox" id="checkbox">
        <label for="checkbox">This is an indeterminate checkbox.</label>
    </div>
    <br>
    <div>
        <input type="radio" id="radio" name="abc">
        <label for="radio">This is an indeterminate radio button.</label>
    </div>
  
    <script>
        var doc = document.getElementsByTagName("input");
  
        for (var i = 0; i < doc.length; i++) {
            doc[i].indeterminate = true;
        }
    </script>
</body>
  
</html>

Output:
indeterminate

Example-2:

<!DOCTYPE html>
<html>
  
<head>
    <title>
        CSS :indeterminate selector
    </title>
    <style>
        progress:indeterminate {
            opacity: 0.5;
            background: lightgray;
            box-shadow: 2px 2px 4px 4px green;
        }
    </style>
</head>
  
<body style="text-align: center;">
    <h1 style="color:green;">
            GeeksforGeeks
        </h1>
    <h2>
            CSS :indeterminate selector
        </h2>
    <p>An indeterminate progress bar.</p>
    <progress>
</body>
  
</html>

Output:
indeterminate

Supported Browsers: The browser supported by :indeterminate selector are listed below:

Apple Safari
Google Chrome 39.0
Firefox 51.0
Opera
Internet Explorer

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