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REFERENCEreact

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React Conditional Rendering with the Logical && Operator

Master React components, hooks, and best practices.

Conditional Rendering with the Logical && Operator

Author

Pascual Vila

Frontend Instructor.

Another common technique for conditional rendering in React is the use of the logical && operator. This operator evaluates whether the condition is true, and if so, renders the desired component or content. If the condition is false, nothing is rendered.

Example with the logical && operator:

          {`import React, { useState } from "react";

          function ConditionalLogical() {
            const [isLoggedIn, setIsLoggedIn] = useState(false);

            return (
              <div>
                {isLoggedIn && (
                  <div>
                    <h1>Welcome</h1>
                    <button onClick={() => setIsLoggedIn(false)}>Log out</button>
                  </div>
                )}
                {!isLoggedIn && (
                  <div>
                    <h1>Please log in</h1>
                    <button onClick={() => setIsLoggedIn(true)}>Log in</button>
                  </div>
                )}
              </div>
            );
          }

          export default ConditionalLogical;`}