create a new room and join it

iframe-new-room-url.js

// you can replace this with your own repl.it endpoint URL!
const createRoomEndpoint = 'https://create-a-room--kwindla.repl.co'

async function startCall() {
  let response = await fetch(createRoomEndpoint),
      roomData = await response.json(),
      callUrl = roomData.url;

  let iframeEl = document.createElement('iframe');
  iframeEl.width = 350;
  iframeEl.height = 425;
  iframeEl.style.position = 'absolute';
  iframeEl.style.right = '1em';
  iframeEl.style.bottom = '3em';
  iframeEl.src = callUrl;
  iframeEl.allow="camera; microphone; autoplay";
  document.body.appendChild(iframeEl); 
}