:indeterminate
The :indeterminate
CSS pseudo-class represents any form element whose state is indeterminate, such as checkboxes which have their HTML indeterminate
attribute set to true
, radio buttons which are members of a group in which all radio buttons are unchecked, and indeterminate <progress>
elements.
css
/* Selects any <input> whose state is indeterminate */
input:indeterminate {
background: lime;
}
Elements targeted by this selector are:
<input type="checkbox">
elements whoseindeterminate
property is set totrue
by JavaScript<input type="radio">
elements, when all radio buttons with the samename
value in the form are unchecked<progress>
elements in an indeterminate state
Syntax
:indeterminate
Examples
Checkbox & radio button
This example applies special styles to the labels associated with indeterminate form fields.
HTML
html
<fieldset>
<legend>Checkbox</legend>
<div>
<input type="checkbox" id="checkbox" />
<label for="checkbox">This checkbox label starts out lime.</label>
</div>
</fieldset>
<fieldset>
<legend>Radio</legend>
<div>
<input type="radio" id="radio1" name="radioButton" value="val1" />
<label for="radio1">First radio label starts out lime.</label>
</div>
<div>
<input type="radio" id="radio2" name="radioButton" value="val2" />
<label for="radio2">Second radio label also starts out lime.</label>
</div>
</fieldset>
CSS
css
input:indeterminate + label {
background: lime;
}
JavaScript
js
const inputs = document.getElementsByTagName("input");
for (let i = 0; i < inputs.length; i++) {
inputs[i].indeterminate = true;
}
Result
Progress bar
HTML
html
<progress></progress>
CSS
css
progress {
margin: 4px;
}
progress:indeterminate {
width: 80vw;
height: 20px;
}
Result
Specifications
Specification |
---|
HTML Standard # selector-indeterminate |
Selectors Level 4 # indeterminate |
Browser compatibility
BCD tables only load in the browser
See also
- Web forms — Working with user data
- Styling web forms
- The
<input type="checkbox">
element'sindeterminate
attribute <input>
and theHTMLInputElement
interface which implements it.- The
:checked
CSS selector lets you style checkboxes based on whether they're checked or not