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The CSS.supports() static methods returns a Boolean value indicating if the browser supports a given CSS feature, or not.

Syntax

boolValue = CSS.supports(propertyName, value);
boolValue = CSS.supports(supportCondition);

Parameters

There are two distinct sets of parameters. The first one allows to test the support of a pair property-value:

propertyName
A DOMString containing the name of the CSS property to check.
value
A DOMString containing the value of the CSS property to check.

The second syntax takes one parameter matching the condition of @supports:

supportCondition
A DOMString containing the condition to check.

Examples

result = CSS.supports("text-decoration-style", "blink");
result = CSS.supports("display: flex");
result = CSS.supports("(--foo: red)");

result = CSS.supports(`(transform-style: preserve) or (-moz-transform-style: preserve) or
                       (-o-transform-style: preserve) or (-webkit-transform-style: preserve)`);

// result is true or false

Specification

Specification Status Comment
CSS Conditional Rules Module Level 3
The definition of 'CSS: supports()' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support 61
Full support 61
Partial support 28
Notes
Notes Version 60 or older didn't support parentheses-less one-argument version.
Edge Partial support Partial
Notes
Partial support Partial
Notes
Notes Edge doesn't support parentheses-less one-argument version.
Firefox Full support 55
Full support 55
Partial support 22
Notes
Notes Version 54 or older didn't support parentheses-less one-argument version.
Partial support 20
Disabled
Disabled From version 20: this feature is behind the layout.css.supports-rule.enabled preference. To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support 12.1Safari No support NoWebView Android Full support 61
Full support 61
Partial support 37
Notes
Notes Version 60 or older didn't support parentheses-less one-argument version.
Chrome Android Full support 61
Full support 61
Partial support 28
Notes
Notes Version 60 or older didn't support parentheses-less one-argument version.
Edge Mobile Partial support Partial
Notes
Partial support Partial
Notes
Notes Edge doesn't support parentheses-less one-argument version.
Firefox Android Full support 55
Full support 55
Partial support 22
Notes
Notes Version 54 or older didn't support parentheses-less one-argument version.
Partial support 20
Disabled
Disabled From version 20: this feature is behind the layout.css.supports-rule.enabled preference. To change preferences in Firefox, visit about:config.
Opera Android Full support 12.1Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
Partial support  
Partial support
No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also

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Última atualização por: sideshowbarker,