JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>
<video></video>

JavaScript

const $video = document.querySelector('video');
if (navigator.getUserMedia) {
  navigator.getUserMedia({audio: true, video: true},
    stream => {
      $video.srcObject = stream;
      $video.muted = true;
      $video.onloadedmetadata = function(e) {
        $video.play();
      };
    },
    error => console.error(error)
  );
}