6 Techniques for Conditional Rendering in React

Yash BhanushaliSoftware Engineer

Published On

Updated On

Table of Content

Conditional rendering is a fundamental concept in React that allows you to control what components or elements are displayed based on certain conditions. This article explores six different techniques for implementing conditional rendering in your React applications, each with its own advantages and use cases.

1. Using the Logical && Operator

The logical AND (&&) operator is one of the simplest ways to conditionally render elements in React. It works because in JavaScript, true && expression evaluates to expression, while false && expression evaluates to false.

function UserGreeting({ isLoggedIn, username }) {
  return (
    <div>
      {isLoggedIn && <h1>Welcome back, {username}!</h1>}
      {!isLoggedIn && <h1>Please sign in</h1>}
    </div>
  );
}

Best for: Simple conditions where you need to show or hide a single element.

Caution: Be careful with values that could be 0, as 0 && expression evaluates to 0, which React will render.

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