Function getFrameByEvent

scripts/smoothScroll.js:263–268

(event)

    }
  }
  function getFrameByEvent(event) {
    let iframes = document.getElementsByTagName("iframe");
    return [].filter.call(iframes, function (iframe) {
      return iframe.contentWindow === event.source;
    })[0];
  }
  /**
   * Removes event listeners and other traces left on the page.
   */