John Mueller from Google advises placing JavaScript code underneath the HTML element to ensure that search engines can clearly understand your website.

Move over, Linux — JavaScript-powered NodeOS 1.0 approaches news analysis Nov 20, 2015 2 mins Development Tools JavaScript Open Source ...

Google Maps has been in the process of moving to a new default JavaScript Maps API Version 3 since May 2010, but the move is now being delayed for six more months due to slow developer adoption.