How to use the clsx library to set class Names dynamically in React?

Estimated read time 2 min read

The clsx library provides a simple way to conditionally join class names together in React. This is useful when you need to dynamically set class names based on certain conditions or props in your component.

Here’s an example of how to use the clsx library to set class names dynamically in React:

import React from 'react';
import clsx from 'clsx';

function MyComponent(props) {
  const { isActive } = props;

  const buttonClassNames = clsx(
    'button',
    {
      'active': isActive,
      'disabled': !isActive
    }
  );

  return (
    <button className={buttonClassNames}>Click me</button>
  );
}

export default MyComponent;

In this example, we’re defining a MyComponent that accepts a isActive prop. We’re using the clsx library to dynamically set the class names of our button element based on the isActive prop.

We’re calling the clsx function with two arguments: the base class name, and an object that maps additional class names to boolean expressions. In this case, we’re adding the active class if isActive is true, and the disabled class if isActive is false.

The clsx function will join these class names together with a space separator, resulting in a string like 'button active' or 'button disabled' that can be used as a className prop on a React element.

By using the clsx library, you can create dynamic and reusable components that can be styled based on their props or state.

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