How to Use the Clsx Library to Set Class Names Dynamically in React?

Sometimes, we want to use the clsx Library to set class names dynamically in React.

In this article, we’ll look at how to use the clsx Library to set class names dynamically in React.

Use the Clsx Library to Set Class Names Dynamically in React

To use the clsx Library to set class names dynamically in React, we call the clsx function with an object that has the class names as the property names.

And the values of the properties would be the condition of which the class names will be applied.

For instance, we can write:

import clsx from "clsx";
import React from "react";

const menuStyle = clsx({
  root: true,
  menuOpen: false
});

export default function App() {
  return <div className={menuStyle}></div>;
}

We call clsx with:

{
  root: true,
  menuOpen: false
}

to add the root class and skip the menuOpen class.

We pass the returned string as the value of the className prop to set the class names.

Conclusion

To use the clsx Library to set class names dynamically in React, we call the clsx function with an object that has the class names as the property names.

And the values of the properties would be the condition of which the class names will be applied.