camera起動forElectron.js

window.addEventListener('load', function(){
  navigator.mediaDevices.getUserMedia({audio: false, video: true}).then((stream) => {
    const video = document.createElement('video');
    video.id = 'drag';
    video.draggable=true;
    document.body.appendChild(video);
    video.src=window.URL.createObjectURL(stream);
    video.style='position: absolute; left: 10px; top: 10px; max-width: 300px; max-height: 300px; border: 1vmin solid white; z-index:99999;';
    video.play();

    var drag = document.querySelector('#drag');
    console.log(drag);
    drag.addEventListener('dragend', function(evt) {
      drag.style.left = (evt.clientX - 150) +'px';
      drag.style.top = (evt.clientY - 150) +'px';
    }, true);
  });
}, false);