Always test your pages using Google’s own tools and third-party resources to view the rendered HTML to make sure all your content is showing up. Google has come a long way with rendering JavaScript.

Web applications provide the best user experience when pages load quickly and display additional data as they become available. Traditional approaches using JavaScript to display data asynchronously ...

Before we get into too much discussion, let’s look at a Hyperscript example that communicates the spirit of the thing: In English, it says: “When the div element is loaded, send an async request to ...