React Webcam Switch Camera Example

index.html

<div id="root"></div>

react-webcam-switch-camera-example.markdown

React Webcam Switch Camera Example

A Pen by Moz Morris on CodePen.

License.

script.babel

const FACING_MODE_USER = "user";
const FACING_MODE_ENVIRONMENT = "environment";

const videoConstraints = {
  facingMode: FACING_MODE_USER
};

const WebcamCapture = () => {
  const [facingMode, setFacingMode] = React.useState(FACING_MODE_USER);

  const handleClick = React.useCallback(() => {
    setFacingMode(
      prevState =>
        prevState === FACING_MODE_USER
          ? FACING_MODE_ENVIRONMENT
          : FACING_MODE_USER
    );
  }, []);

  return (
    <>
      <button onClick={handleClick}>Switch camera</button>
      <Webcam
        audio={false}
        screenshotFormat="image/jpeg"
        videoConstraints={{
          ...videoConstraints,
          facingMode
        }}
      />
    </>
  );
};

ReactDOM.render(<WebcamCapture />, document.getElementById("root"));

// https://www.npmjs.com/package/react-webcam

scripts

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/prop-types@15.6.1/prop-types.js"></script>
<script src="https://unpkg.com/react-webcam/dist/react-webcam.min.js"></script>

style.css

button,
video {
  display: block;
}