Installing React Developer Tools

- [Teacher] React has a browser extension … for Chrome and Firefox that makes debugging … and learning about React a little bit easier. … In this video, we're going to install those extensions … and see how they work. … So here is the mobile Twitter site, … specifically my timeline, … and we're going to install the Chrome extension … and take a look at what React is doing on this page. … So I'm going to open up the menu … and go to extensions under more tools. … Here are the extensions that are installed right now. … Click get more extensions. … Let's search for React Developer Tools. … Add this to Chrome. … Add extension, and there we go. … We have this little icon up here. … Currently grayed out. … Close all this down, and refresh this page. … You can see it lights up, which shows me … that React is being used on this page. … If I click it, it tells me … that I'm using the production build. … If I were using a developer build, … it would light up in a different color. … So let's open up the developer tools. …