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How to add multiple classes to a ReactJS Component?

Get to know how to add multiple classes to a react js Component using these easy methods

Created on Jan 31, 2022

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In this short snippet, you will learn how to add multiple classes into React component and basically any HTML element tag that's on your react project. It's 

ES6 Template Literals

<div className={`${styles.class1} ${styles.class2}`}></div>

<div className={`${class1} anotherClass ${class1}`}></div>

<li className={`li active`}>Stacy</li>

<li className={`li ${this.state.isActive ? 'active' : ''}`}>Stacy<li>
By using ES6 template literal you can add multiple classes to the HTML tag.

Pass Comma Separated Array

<Link className={[classes.button, classes.buttonFirst]}>

<Link className={['first', 'second']}>
Other than that you can pass it in as an array and separated it by a comma.

Using classnames Library


Another way is to use classnames library and with it, you can also toggle classes depending on the state of your component.
# via npm
npm install classnames

# or Yarn (note that it will automatically save the package to your `dependencies` in `package.json`)
yarn add classnames
And the way you define a class is like the following.
var classNames = require('classnames');
classNames('foo', 'bar'); // => 'foo bar'
And for the dynamic class name, you can refer to the code below.
let buttonType = 'primary';
classNames({ [`btn-${buttonType}`]: true });

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