Before starting React Native you should have solid JavaScript fundamentals, ES6 knowledge, basic React concepts, and a configured development environment. Suitable hardware, Node/NPM, and emulator setup should also be ready.
What prerequisites are needed to learn React Native before you start?
Short answer: Before starting React Native you need a strong JavaScript foundation, ES6 knowledge, and a basic understanding of React (components, props, state). Additionally, familiarity with Node.js, a package manager (npm/yarn), Git, and a development machine with mobile emulator setup will make your work much easier.
Required programming and conceptual prerequisites
React Native is a JavaScript-based mobile application framework. Therefore the primary prerequisite is JavaScript knowledge—especially variables, functions, arrays, objects, and asynchronous programming (callbacks, Promise, async/await). ES6 syntax (arrow functions, let/const, destructuring, template literals, modules) is used commonly in daily development and should be learned.
On top of that come basic React concepts: component structure, props, state, lifecycle (or hooks), JSX, and understanding how components compose to build the UI will speed up learning React Native. If you already know React the transition is fast; if not, spend some initial time on these topics.
Installation and development environment
Essential tools for React Native projects: Node.js, npm or yarn, Git, and a text editor/IDE (VS Code is a common choice). For Android development you need Android Studio and relevant SDKs; for iOS development you need Xcode (iOS development is fully supported only on macOS). You can also choose between React Native CLI or Expo CLI depending on your needs.
Expo lets you start faster and simplifies emulator/device setup; however, Expo has limitations when you need certain native modules. React Native CLI offers more flexibility but requires more setup and native configuration. Decide which path suits your project before you start.
Computer requirements and platform comparison
Hardware requirements for React Native development vary by platform. iOS development requires macOS; Android development is possible on macOS, Windows, and Linux. The table below summarizes basic differences and recommendations.
| Feature | macOS | Windows / Linux |
|---|---|---|
| iOS development | Supported (Xcode required) | Not supported (only third-party solutions) |
| Android development | Supported (Android Studio) | Supported (Android Studio) |
| Recommended RAM | 16 GB or more | 8 GB minimum, 16 GB recommended |
| Storage | Fast SSD, 50+ GB free | Fast SSD, 50+ GB free |
In summary: for a comfortable development experience, a fast SSD, 16 GB RAM, and a recent CPU are recommended. If you target iOS apps as well, macOS is required.
Two-week roadmap for the first 14 days (day-by-day suggestion)
The first two weeks are enough to learn core concepts and start a small app. Below is a sample plan; adapt it according to your daily study time.
- Day 1: Review JavaScript ES6 (let/const, arrow functions, destructuring, modules)
- Day 2: Asynchronous JS (Promise, async/await) and basic data structures
- Day 3: React fundamentals: JSX, components, props, state
- Day 4: Functional Components and Hooks (useState, useEffect)
- Day 5: React Native introduction: creating a project (Expo vs CLI), basic components (View, Text, Image)
- Day 6: Layout and styling: Flexbox, using StyleSheet
- Day 7: Simple app: single-screen app without navigation, example API call
- Day 8: Simple navigation with React Navigation (stack/tab)
- Day 9: Forms, input controls and state management basics (Context)
- Day 10: Local storage (AsyncStorage) and basic persistence
- Day 11: Platform differences, common errors and using the debugger
- Day 12: Testing on a device: connecting a physical device and emulator configuration
- Day 13: Project improvements and refactoring
- Day 14: Small finished project: list + detail + API + simple navigation
By the end of these two weeks you should have a runnable demo app with basic features. After that you can move to advanced topics (performance, native modules, advanced state management).
Common beginner mistakes and how to avoid them
Common early mistakes include jumping straight into native topics without sufficient JS/React knowledge, skipping project setup, and ignoring error messages. These mistakes cause delays later. Learn step-by-step and validate each new concept with small examples.
Another frequent mistake: starting with Expo and then struggling to migrate to CLI when native modules are needed. Choose the right starter approach based on project needs. Version mismatches (Node, npm, Android SDK) also take time to resolve; record versions at project start and follow documentation.
Brief note about the Opendart training
Opendart's React Native training is designed as a 2-month program (120 hours + project development). Payment options include interest-free installments on credit cards or bank transfer. Sessions are offered on weekdays in three different time slots (09-12, 15-18, or 19-22) and on weekends in two slots (10-15 or 15-20). Training is available as live online or in-person classes; corporate trainings are typically 30 hours (6 hours per day) and divided into Basic/Advanced levels.
If you want a structured program, Opendart's 2-month course focuses on projects and helps you build a job-oriented portfolio. Session times can be chosen according to your schedule.
Frequently Asked Questions
1. Do I absolutely need to know React before learning React Native?
Not absolutely, but highly recommended. Being familiar with React fundamentals (components, props, state, hooks) greatly accelerates learning React Native and makes it easier to handle more complex topics.
2. Should I choose Expo or React Native CLI?
Expo is suitable for rapid prototyping and beginners because it simplifies setup and provides ready tools. If you need native libraries or custom native code, React Native CLI is more flexible and powerful. Choose based on your project requirements.
3. Which IDE/editor should I use?
VS Code is a solid choice due to its popularity and rich extension ecosystem. With code completion, linting, and debugging extensions you'll have a comfortable workflow. You can opt for heavier IDEs if you prefer.
4. What should be in a portfolio for a first job or internship?
At least one completed mobile app (with API integration, navigation, form handling) whose code is available in a GitHub repo. Include run instructions (README), screenshots and a short project description.
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Conclusion
Having a solid JavaScript foundation, ES6 knowledge and familiarity with React concepts will help you progress quickly in React Native. Properly setting up the development environment (Node, npm/yarn, Android Studio/Xcode) and having appropriate hardware will make the project experience smoother. You can learn core concepts and build a small app within two weeks; avoid common mistakes by learning step-by-step and using practical examples. Opendart's 2-month program offers project-focused learning and flexible session options to support this journey.
