FontFaceSet.check()

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The check() method of the FontFaceSet returns whether all fonts in the given font list have been loaded and are available.

Syntax

bool = aFontFaceSet.check(font);
bool = aFontFaceSet.check(font, text);

Returns

A Boolean that is true if the font list is available

Parameters

Examples

document.fonts.check("12px courier"); // returns true if the font courier is available at 12px

document.fonts.check("12px MyFont", "ß"); // returns true if the font 'MyFont' has a ß character. 

Specifications

Specification Status Comment
CSS Font Loading Module Level 3
The definition of 'check' in that specification.
Working Draft Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome Full support 35Edge ? Firefox Full support 41IE ? Opera ? Safari ? WebView Android Full support 37Chrome Android Full support 35Edge Mobile ? Firefox Android Full support 41Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

Contributors to this page: fscholz, teoli, Dan-Dascalescu
Last updated by: fscholz,