How did you manage state in your React app?

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🔹 State Management Approach

1. Local State (useState & useEffect)

• For small, component-specific states like form inputs, toggles, and UI elements, I used useState.

• Example:

  const [task, setTask] = useState("");
  const [tasks, setTasks] = useState([]);
  
  useEffect(() => {
    // Fetch tasks when component loads
    fetchTasks();
  }, []);
  

  • task → holds input value for a new task.

  • tasks → stores all tasks fetched from API.

  • useEffect → loads tasks when the component mounts.

2. Lifting State Up

• When multiple components needed the same data (e.g., task list in Dashboard & TaskForm), I kept the state in a parent component and passed it down as props.

• This avoided duplication and kept data consistent.

3. Context API (for Authentication & Global Data)

• For global state like logged-in user info and JWT tokens, I used the React Context API.

• This prevented prop drilling (passing props too deeply).

• Example:

  const AuthContext = createContext();
  
  function AuthProvider({ children }) {
    const [user, setUser] = useState(null);
    return (
      <AuthContext.Provider value={{ user, setUser }}>
        {children}
      </AuthContext.Provider>
    );
  }
  

  • Now any component could use useContext(AuthContext) to access user data.

4. Async State (API Data Handling)

• For API calls, I managed loading and error states along with data.

• Example:

  const [loading, setLoading] = useState(false);
  const [error, setError] = useState(null);
  
  async function fetchTasks() {
    try {
      setLoading(true);
      const res = await fetch("/api/tasks");
      const data = await res.json();
      setTasks(data);
    } catch (err) {
      setError("Failed to fetch tasks");
    } finally {
      setLoading(false);
    }
  }
  

5. (Optional) Redux / Zustand for Scalability

• In a larger project, I would use Redux Toolkit or Zustand for more complex global state management.

• But for this project, Context + useState/useEffect was sufficient.

✅ In summary:
I managed state using useState and useEffect for local data, lifting state up for shared data, and the Context API for global state like authentication. This approach kept the app clean, modular, and easy to scale.

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