subject 1. Lorem ipsum dolor sit amet consectetur adipisicing elit. Debitis, laborum perspiciatis ipsam similique, doloremque voluptatem ea necessitatibus incidunt vero cumque porro tempora aperiam ...

pageHeight integer (0 - 100) - Height of your app in pixels.; viewportHeight integer (0 - 100) - The height of your app visible in the viewport (removes floating Facebook header and static header from ...

This one was about lazy loading scroll events and how Google handles them. ... They have an e-commerce site and the products are changing rapidly and are lazy loaded with JavaScript scrolling events.