How I Approach React Machine Coding Rounds

Most React machine coding rounds don't test how many hooks you know. They test how you structure your code under time pressure.

Before writing code, I first split the problem into reusable components.

App
├── Sidebar
├── Header
├── SearchBar
├── Card
├── Modal
└── Pagination

State should live as high as necessary, but no higher.

const [users, setUsers] = useState([]);
const [loading, setLoading] = useState(false);
const [search, setSearch] = useState("");

Keep API calls separate from UI.

useEffect(() => {
  fetchUsers();
}, []);

Avoid putting business logic directly inside JSX.

const filteredUsers = users.filter(user =>
  user.name.toLowerCase().includes(search.toLowerCase())
);

A few things I always keep in mind:

• Break the UI into reusable components.
• Keep components small and focused.
• Use controlled inputs.
• Handle loading and error states.
• Add meaningful folder structure.
• Write clean, readable code instead of clever code.

Most interviewers care more about code organization and maintainability than fancy animations. A clean solution with reusable components almost always scores better than a complex one finished at the last minute.