code: function clearBackground() {
    var body = document.body;
    if (body.style) {
      body.style.backgroundColor = 'rgba(0,0,0,0.01)';
      body.style.backgroundImage = '';
      setTimeout(function() {
        body.style.backgroundColor = 'transparent';
      }, 1);
      if (body.parentNode && body.parentNode.style) {
        body.parentNode.style.backgroundColor = 'transparent';
        body.parentNode.style.backgroundImage = '';
      }
    }
  }
docs: Simple utility method to ensure the background is transparent. Used by the plugin to force re-rendering immediately after the native webview background is made transparent.