Onze vrijwilligers hebben dit artikel nog niet naar het Nederlands vertaald. Doe mee en help de klus te klaren!
U kunt het artikel ook in het English (US) lezen.

The :indeterminate CSS pseudo-class represents any form element whose state is indeterminate.

/* Selects any <input> whose state is indeterminate */
input:indeterminate {
  background: lime;
}

Elements targeted by this selector are:

Syntax

:indeterminate

Examples

Checkbox & radio button

This example applies special styles to the labels associated with indeterminate form fields.

HTML

<div>
  <input type="checkbox" id="checkbox">
  <label for="checkbox">This label starts out lime.</label>
</div>
<div>
  <input type="radio" id="radio">
  <label for="radio">This label starts out lime.</label>
</div>

CSS

input:indeterminate + label {
  background: lime;
}

JavaScript

var inputs = document.getElementsByTagName("input");

for (var i = 0; i < inputs.length; i++) {
  inputs[i].indeterminate = true;
}

Progress bar

HTML

<progress>

CSS

progress {
  margin: 4px;
}

progress:indeterminate {
  opacity: 0.5;
  background-color: lightgray;
  box-shadow: 0 0 2px 1px red;
}

Result

Specifications

Specification Status Comment
HTML Living Standard
The definition of ':indeterminate' in that specification.
Living Standard No change.
HTML5
The definition of ':indeterminate' in that specification.
Recommendation Defines the semantics of HTML and constraint validation.
Selectors Level 4
The definition of ':indeterminate' in that specification.
Working Draft No change.
CSS Basic User Interface Module Level 3
The definition of ':indeterminate' in that specification.
Recommendation Defines the pseudo-class, but not the associated semantics.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
:indeterminateChrome Full support YesEdge Full support YesFirefox Full support 2IE Full support YesOpera Full support YesSafari Full support YesWebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android Full support 4Opera Android ? Safari iOS ? Samsung Internet Android ?
type="checkbox"Chrome ? Edge Full support YesFirefox Full support 3.6IE Full support 9Opera Full support 10.6Safari Full support 3WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android Full support 4Opera Android ? Safari iOS ? Samsung Internet Android ?
type="radio"Chrome Full support 39Edge No support No
Notes
No support No
Notes
Notes See Edge bug 7124038.
Firefox Full support 51IE No support NoOpera ? Safari No support No
Notes
No support No
Notes
Notes See WebKit bug 156270.
WebView Android Full support 39Chrome Android ? Edge Mobile No support No
Notes
No support No
Notes
Notes See Edge bug 7124038.
Firefox Android Full support 51Opera Android ? Safari iOS No support No
Notes
No support No
Notes
Notes See WebKit bug 156270.
Samsung Internet Android ?
<progress>Chrome Full support 6Edge Full support YesFirefox Full support 6IE Full support 10Opera ? Safari Full support YesWebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android Full support 6Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.

Documentlabels en -medewerkers

Laatst bijgewerkt door: mdnwebdocs-bot,