alenstarx

  const WsStateDisconnected = 0;
  const WsStateDisconnecting = 1;
  const WsStateConnected = 2;
  const WsStateConnecting = 3;
  class SimpleWSocket {
    constructor(url) {
      this.wsState = WsStateDisconnected;
      this.timer = null;
      this.url = url;
      this.ws = null;

ivoputzer

function scrolledIntoView(element) {
  var rect = element.getBoundingClientRect()
    , h = (window.innerHeight || document.documentElement.clientHeight)
    , w = (window.innerWidth || document.documentElement.clientWidth)
    , verticalVisibility = (rect.top <= h) && ((rect.top + rect.height) >= 0)
    , horizontalVisibility = (rect.left <= w) && ((rect.left + rect.width) >= 0)
  return verticalVisibility && horizontalVisibility
}