toggle button with Build a Reusable Toggle Button in React with Custom Hook | React Hook Tutorial
Build a Reusable Toggle Button in React with Custom Hook | React Hook Tutorial
In this video, you'll learn how to create a reusable Toggle Button component in React using a custom hook called useToggle. This is a clean, beginner-friendly tutorial focused on writing functional components and mastering custom React hooks for better code reuse and state management.
What You'll Learn:
How to build a custom hook useToggle(initialValue)
Managing toggle state with a simple boolean
Toggling between "ON" and "OFF" on button click
Ensuring state is isolated across multiple components
Handling parent re-renders without resetting state
Keeping the toggle function stable (same reference)
Key Features:
Functional Components Only
Custom Hook: useToggle(false) → returns [value, toggle]
Reusable across components with isolated state
Persistent state across re-renders
Perfect for unit testing with data-testid="toggle-button"
Test Case Highlights:
Initial value must be false (OFF)
State should toggle correctly on multiple clicks
State should remain isolated between components
Toggle state should persist across re-renders
Toggle function must be stable (same reference)
Whether you're new to React hooks or looking to improve your code architecture, this tutorial will help you build cleaner, modular, and more maintainable components.
Code Repository (if available): [Add your repo link here]
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