React Conditional Rendering

Published on : May 14,2023

Here's an article with code and examples using different operators for React conditional rendering.

React Conditional Rendering with Different Operators

In React, conditional rendering allows you to show or hide certain parts of your UI based on certain conditions. There are different operators you can use to implement conditional rendering in React. In this article, we'll go over some examples of conditional rendering using different operators.

Using the Ternary Operator

The ternary operator is a shorthand way of writing an if-else statement in JavaScript. You can use the ternary operator to conditionally render elements in your React components. Here's an example:

import React from 'react';

function Greeting(props) {
  const isLoggedIn = props.isLoggedIn;
  return (
    <div>
      {isLoggedIn ? (
        <h1>Welcome back!</h1>
      ) : (
        <h1>Please log in.</h1>
      )}
    </div>
  );
}

export default Greeting;

In this example, we're using the ternary operator to render different messages depending on the value of isLoggedIn. If isLoggedIn is true, we render the message "Welcome back!", otherwise we render the message "Please log in.".

Using the && Operator

You can also use the && operator to conditionally render elements in React. Here's an example:

import React from 'react';

function Greeting(props) {
  const isLoggedIn = props.isLoggedIn;
  return (
    <div>
      {isLoggedIn && <h1>Welcome back!</h1>}
    </div>
  );
}

export default Greeting;

In this example, we're using the && operator to render the message "Welcome back!" only if isLoggedIn is true.

Using the || Operator

You can also use the || operator to conditionally render elements in React. Here's an example:

import React from 'react';

function Greeting(props) {
  const isLoggedIn = props.isLoggedIn;
  return (
    <div>
      {isLoggedIn || <h1>Please log in.</h1>}
    </div>
  );
}

export default Greeting;

In this example, we're using the || operator to render the message "Please log in." only if isLoggedIn is false.

Using the Switch Statement

You can also use a switch statement to conditionally render elements in React. Here's an example:

import React from 'react';

function Greeting(props) {
  const userType = props.userType;
  switch (userType) {
    case 'admin':
      return <h1>Welcome admin!</h1>;
    case 'user':
      return <h1>Welcome user!</h1>;
    default:
      return <h1>Please log in.</h1>;
  }
}

export default Greeting;

In this example, we're using a switch statement to render different messages depending on the value of userType. If userType is "admin", we render the message "Welcome admin!", if it's "user", we render the message "Welcome user!", otherwise we render the message "Please log in.".

Conclusion

Conditional rendering is an important feature in React that allows you to show or hide certain parts of your UI based on certain conditions. In this article, we went over some examples of conditional rendering using different operators such as the ternary operator, && operator, || operator, and the switch statement. By using these operators, you can make your code more concise and readable, and make your components more flexible and dynamic.

Categories : React

Tags : react frontend development conditional rendering ternary operator logical and operator logical or operator switch case operator

Praful Sangani

I'm a passionate full-stack developer with expertise in PHP, Laravel, Angular, React Js, Vue, Node, Javascript, JQuery, Codeigniter, and Bootstrap. I enjoy sharing my knowledge by writing tutorials and providing tips to others in the industry. I prioritize consistency and hard work, and I always aim to improve my skills to keep up with the latest advancements. As the owner of Open Code Solution, I'm committed to providing high-quality services to help clients achieve their business goals.