A2. It depends on the complexity of your project. However, a React developer with at least 2-3 years of experience is typically considered to have a good level of expertise in React development.
A3. The cost of hiring a React developer can vary depending on several factors such as experience, location, and project requirements. You can either hire a React developer on an hourly or project basis. Hourly rates typically range from $50-$150, while project rates can vary from $5,000 to $50,000 or more.
A4. The core features of React include JSX syntax for rendering components, virtual DOM for efficient updates, component-based architecture for reusability, and unidirectional data flow for predictable behavior.