Web/API/CSS/supports

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

Syntax

CSS.supports(propertyName, value);
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.

Return value

true if the browser supports the rule, otherwise false.

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 3The definition of 'CSS: supports()' in that specification.	Candidate Recommendation	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`supports`	Chrome 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 12 Notes' Partial support 12 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 No	Opera Full support 12.1	Safari Full support 10	WebView 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.	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 12.1	Safari iOS Full support Yes	Samsung Internet Android Full support 8.0 Full support 8.0 Partial support 1.5 Notes' Notes' Samsung Internet 8.0 or older didn't support parentheses-less one-argument version.

Legend

Full support: Full support
Partial support: Partial support
No support: No support
See implementation notes.': See implementation notes.
User must explicitly enable this feature.': User must explicitly enable this feature.