Live Coding a React Calculator App - For the FUN of It! by Michael Jackson
Michael Jackson (@mjackson), co-founder of React Training and co-author of react-router, the most popular open source React library outside of Facebook, will walk us through building a real application with React. Along the way we'll explore a lot of React component lifecycle methods, as well as some techniques for thinking about managing state. We'll probably even watch Michael struggle through some embarrassing bugs! Above all, we'll see how working with React can be really intuitive ... and fun!
Codepen (source code): https://codepen.io/mjijackson/pen/xOzyGX