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

Specifications

Specification
CSS Conditional Rules Module Level 3 (CSS Conditional 3) # ref-for-dom-css-supports

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`supports`	61 28 Version 60 or older didn't support parentheses-less one-argument version.	12 Edge doesn't support parentheses-less one-argument version.	55 22 Version 54 or older didn't support parentheses-less one-argument version.	No	12.1	10	61 37 Version 60 or older didn't support parentheses-less one-argument version.	61 28 Version 60 or older didn't support parentheses-less one-argument version.	55 22 Version 54 or older didn't support parentheses-less one-argument version.	12.1	Yes	8.0 1.5 Samsung Internet 8.0 or older didn't support parentheses-less one-argument version.