How the CSS :is() selector will simplify things

One of the selectors in CSS Level 4 is :is(). It is the successor to :any() and :matches() (which are supplanted by :is()):

The :is() CSS pseudo-class function takes a selector list as its argument, and selects any element that can be selected by one of the selectors in that list. This is useful for writing large selectors in a more compact form.

/* Without :is */
article > h1,
article > h2,
article > h3,
article > h4,
article > h5 {
  /* … */
}

/* With :is() */
article > :is(h1, h2, h3, h4, h5) {
  /* … */
}

Browser Support isn’t quite there yet though, as they’re either all behind feature flags or use the outdated :matches() or (prefixed) :any()

MDN Web Docs; :is() (:matches(), :any())

Video via @argyleink

Published by Bramus!

Bramus is a frontend web developer from Belgium, working as a Chrome Developer Relations Engineer at Google. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

Unless noted otherwise, the contents of this post are licensed under the Creative Commons Attribution 4.0 License and code samples are licensed under the MIT License

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