
How to Toggle Classes in Svelte
You can use the class directive in Svelte to easily toggle classes on an element.
<!-- You can use the class: directive to toggle a class on an element -->
<!-- π΄ Instead of -->
<li class="{active ? 'active' : ''}">Dashboard</li>
<!-- β
You can do -->
<!-- The two are equivalent -->
<li class:active={active}>Dashboard</li>
Copied to clipboard!
If both name and value match, you can also simplify things by omitting both the class name and the variable assignment as well:
<li class:active>Dashboard</li>
Copied to clipboard!
You also have the option to define multiple classes at once, like so:
<li class:inactive class:hidden>Secrets</li>
Copied to clipboard!


Looking to improve your skills? Learn how to build reactive apps with Svelte + Tailwind.

Resources:
π More Webtips
Master the Art of Frontend
Unlimited access to hundred of tutorials
Access to exclusive interactive lessons
Remove ads to learn without distractions