React Js Conditionally Applying Class Attributes

React Js conditionally applying class attributes

When working with React Js, you may often come across situations where you need to apply different CSS classes to elements based on certain conditions. In this blog post, we will explore different ways to conditionally apply class attributes in React Js.

Method 1: Using conditional statements

One way to conditionally apply class attributes in React Js is by using conditional statements within the JSX code. You can use the ternary operator to check the condition and apply different classes accordingly.

import React from 'react';

function MyComponent() {
  const isConditionMet = true;

  return (
    
      // Content here
    
  );
}

export default MyComponent;

In the above example, the class attribute of the div element will be set to ‘class1’ if the condition is met, otherwise it will be set to ‘class2’.

Method 2: Using classnames library

An alternative approach is to use the classnames library, which provides a convenient way to conditionally apply class attributes in React Js. This library allows you to pass multiple class names as arguments and it will concatenate them based on the conditions.

import React from 'react';
import classNames from 'classnames';

function MyComponent() {
  const isConditionMet = true;

  const divClasses = classNames({
    class1: isConditionMet,
    class2: !isConditionMet,
  });

  return (
    
      // Content here
    
  );
}

export default MyComponent;

In the above example, the classNames function is used to conditionally apply class attributes. If the condition is met, the class1 will be applied, otherwise class2 will be applied.

Method 3: Using CSS Modules

If you are using CSS Modules in your React Js project, you can leverage its features to conditionally apply class attributes. CSS Modules allow you to import CSS files as objects, and you can access the class names as properties of that object.

// styles.css
.class1 {
  // CSS styles
}

.class2 {
  // CSS styles
}

// MyComponent.js
import React from 'react';
import styles from './styles.css';

function MyComponent() {
  const isConditionMet = true;

  return (
    
      // Content here
    
  );
}

export default MyComponent;

In the above example, the class names are imported from the CSS file using CSS Modules. Then, the class attributes are conditionally applied based on the condition.

These are some of the ways to conditionally apply class attributes in React Js. Choose the method that suits your project requirements and coding style. Happy coding!

React Js Conditionally Applying Class Attributes