React Hooks Every Developer Should Master

Master these three React Hooks and become an efficient React developer! This article will introduce three core React Hooks, which are the foundation of modern React development.

1️⃣ useState: Manage component status

This is the most basic Hook for managing state in functional components.

Features: Allows you to add local state to a component. Returns an array: the current state value and a function for updating it.

Usage:

<code class="language-javascript">const [count, setCount] = useState(0);</code>

Application scenarios: Build counters, switch UI elements (such as modal boxes), and manage form input fields.

2️⃣ useEffect: Managing side effects

This is a great tool for managing side effects in React.

Side effects: For example: getting data, updating DOM manually or subscribing to events. useEffectMake sure these operations happen after rendering.

Usage:

<code class="language-javascript">useEffect(() => { 
  fetchData(); 
}, [dependency]);</code>

Key features: Dependency array controls when side effects run. Empty array []: Run once when mounting; Unlimited array: Run every render; [dependency]: Run when dependencies change; Cleanup logic: Great for unsubscribing events.

3️⃣ useContext: Easily share global status

Say goodbye to tedious props delivery! useContextAllows you to seamlessly access and share global state across your applications.

Features: Provides a way to pass data through the component tree without manually passing props.

Usage:

<code class="language-javascript">const user = useContext(UserContext);</code>

Application scenarios: Theme management (dark/light mode), authentication (global storage of user information), cross-component data sharing (such as language settings).

These three Hooks form the core foundation of modern React development. Which Hook do you use most often? Or are there other Hooks you can't live without? Welcome to share your experience in the comment area!

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