Function getOpacity

javascript/atoms/typescript/is-displayed.ts:104–109

(elem: Element)

  }

  function getOpacity(elem: Element): number {
    var opacityStyle = getEffectiveStyle(elem, 'opacity');
    var opacity = opacityStyle ? Number(opacityStyle) : 1;
    var parent = getParentElement(elem);
    return parent ? opacity * getOpacity(parent) : opacity;
  }

  function getParentNodeInComposedDom(node: Node): Node | null {
    var parent = node.parentNode;