There's always going to be the big drawback of working in a separate VM (JavaScript) rather than directly accessing native APIs. But React is taking advantage o

There's always going to be the big drawback of working in a separate VM (JavaScript) rather than directly accessing native APIs. But React is taking advantage of that as much as possible, making it easy to refresh everything and allowing you bring everything you knew about React.js over. But if you want to access an API, you still need to wrap it. Depending on the API, you need to be careful performance-wise. Native React avoids a ton of problems that other frameworks have though because they provide a solid mechanism for dynamically working with UIs, and it's very efficient because they only send minimal diffs across the bridge.