Hi Aquib,

You need to master the following topics in ReactJS:

1. React Basics: Components, JSX, rendering, state, and props.
2. Lifecycle and State Management: Component lifecycle methods, state handling.
3. Event Handling and Forms: Handling events, form management and validation.
4. Component Composition: Composing components, HOCs, render props.
5. Routing and Styling: React Router for routing, styling approaches.
6. Hooks and Context API: React hooks, context API for state management.
7. Testing and Performance: Unit testing, performance optimisation, error handling.

If you feel you've mastered the above topics, make sure to add a good project on ReactJS, which enhances your profile.

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Thanks,

Madhav Bhatia

It depend on your experience first.

If you are a junior developer, I would advise you to focus on JS and HTML fundamentals first and then understand React.

Madhav has shared a pretty comprehensive list of all React fundamentals.

However, if you have an experience of more than 5 years, I would advise you to understand what problem React is solving. You can do that by working on projects in both Vanilla JS and React. Understand what are the pain points Vanilla JS has that React helps. Understand how React can be optimised for performance