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The :only-of-type CSS pseudo-class represents an element that has no siblings of the same type.

/* Selects each <p>, but only if it is the */
/* only <p> element inside its parent */
p:only-of-type {
  background-color: lime;
}

Note: As originally defined, the selected element had to have a parent. Beginning with Selectors Level 4, this is no longer required.

Syntax

:only-of-type

Example

HTML

<main>
  <div>I am `div` #1.</div>
  <p>I am the only `p` among my siblings.</p>
  <div>I am `div` #2.</div>
  <div>I am `div` #3.
    <i>I am the only `i` child.</i>
    <em>I am `em` #1.</em>
    <em>I am `em` #2.</em>
  </div>
</main>

CSS

main :only-of-type {
  color: red;
}

Result

Specifications

Specification Status Comment
Selectors Level 4
The definition of ':only-of-type' in that specification.
Working Draft Matching elements are not required to have a parent.
Selectors Level 3
The definition of ':only-of-type' in that specification.
Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
:only-of-typeChrome Full support 1Edge Full support YesFirefox Full support 3.5IE Full support 9Opera Full support 9.5Safari Full support 3.2WebView Android Full support 2Chrome Android ? Edge Mobile Full support YesFirefox Android Full support 4Opera Android Full support 10Safari iOS Full support 3.2Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

文件標籤與貢獻者

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