beginners-guide-to-react-base/19-basic-forms.html at main · volta2016/beginners-guide-to-react-base · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>dom-refs</title>
  </head>
  <style>
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    }
  </style>
  <body>
    <div id="root"></div>

    <script
      src="https://unpkg.com/react@17/umd/react.production.min.js"
      crossorigin
    ></script>
    <script
      src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"
      crossorigin
    ></script>
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
    <script src="https://unpkg.com/vanilla-tilt@1.7.0/dist/vanilla-tilt.min.js"></script>
    <script type="text/babel">
      function UserNameForm() {
        function hadleSubmit(event) {
          event.preventDefault();
          console.dir(event.target);

          const username = event.target.elements.usernameInput.value;

          alert(`You entered: ${username}`);
        }

        return (
          <form onSubmit={hadleSubmit}>
            <div>
              <label htmlFor="usernameInput">Username:</label>
              <input type="text" id="usernameInput" />
            </div>
            <button type="submit">Submit</button>
          </form>
        );
      }

      ReactDOM.render(<UserNameForm />, document.getElementById("root"));
    </script>
  </body>
</html>