In this chapter, you learned about React tooling that is available directly through the web browser. The tool of choice here is a Chrome/Firefox extension called React Developer Tools. This extension adds React-specific capabilities to the browsers native developer tools. After you installed the extension, you learned how to select React elements and how to search for React elements by tag name.
Next, you looked at the properties and state values of the selected React component in React Developer Tools. These values are kept up to date automatically, as they're changed by your application. You then learned how to directly manipulate element state directly within the browser. The limitation here being that you can't add or remove values from collections.
Finally, you learned how to profile your React component performance within the browser. This isn't a React Developer Tools feature, but something the develop build of React 16 does automatically. Using profiles like these allows you...
