title: e.target.value on an input field ReactJs, how does it work?
body: <p><a href="https://facebook.github.io/react/docs/thinking-in-react.html" rel="noreferrer">https://facebook.github.io/react/docs/thinking-in-react.html</a></p>
  
  <p>I'm at the end of this tutorial and I'm just not understanding how e.target.value works. Walk through the end of this tutorial and see the sample code that there is please. I'm newbie both to React and Javascript.</p>