How to use clsx in React

Question

I am trying to understand some uses of clsx in assigning classnames to a component in React.

The construct

className={clsx(classes.menuButton, open &         


        

Answer 1

clsx is generally used to conditionally apply a given className

This syntax means that some class will only be applied if a given condition evaluates to true

const menuStyle = clsx({
    [classes.root] : true, //always applies
    [classes.menuOpen] : open //only when open === true
})

In this example [classes.menuOpen] (which will evaluate to something like randomclassName123) will only be applied if open === true

---

clsx basically performs a string interpolation. So you don't have to necessarily use it to conditionally apply classes.

There are many supported syntax that you can check in the official docs

Instead of

You can use it like this

const { foo, bar, baz } = classes
const style = clsx(foo, bar, baz)

return