Detecting Fonts Ready

By  on  

Knowing when resources are loaded is a key part of building functional, elegant websites. We're used to using the DOMContentLoaded event (commonly referred to as "domready") but did you know there's an event that tells you when all fonts have loaded? Let's learn how to use document.fonts!

The document.fonts object features a ready property which is a Promise representing if fonts have been loaded:

// Await all fonts being loaded
await document.fonts.ready;

// Now do something!  Maybe add a class to the body
document.body.classList.add('fonts-loaded');

Font files can be relatively large so you can never assume they've loaded quickly. One simply await from document.fonts.ready gives you the answer!

Recent Features

  • By
    Vibration API

    Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user.  One of those simple APIs the Vibration API.  The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...

  • By
    9 Mind-Blowing WebGL Demos

    As much as developers now loathe Flash, we're still playing a bit of catch up to natively duplicate the animation capabilities that Adobe's old technology provided us.  Of course we have canvas, an awesome technology, one which I highlighted 9 mind-blowing demos.  Another technology available...

Incredible Demos

Discussion

    Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!