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
    fetch API

    One of the worst kept secrets about AJAX on the web is that the underlying API for it, XMLHttpRequest, wasn't really made for what we've been using it for.  We've done well to create elegant APIs around XHR but we know we can do better.  Our effort to...

  • By
    Create a CSS Flipping Animation

    CSS animations are a lot of fun; the beauty of them is that through many simple properties, you can create anything from an elegant fade in to a WTF-Pixar-would-be-proud effect. One CSS effect somewhere in between is the CSS flip effect, whereby there's...

Incredible Demos

  • By
    jQuery Link Nudging

    A few weeks back I wrote an article about MooTools Link Nudging, which is essentially a classy, subtle link animation achieved by adding left padding on mouseover and removing it on mouseout. Here's how to do it using jQuery: The jQuery JavaScript It's important to keep...

  • By
    Spoiler Prevention with CSS Filters

    No one likes a spoiler.  Whether it be an image from an upcoming film or the result of a football match you DVR'd, sometimes you just don't want to know.  As a possible provider of spoiler content, some sites may choose to warn users ahead...

Discussion

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