Submission + - Faster page loads by removing javascript blocking (webdigi.co.uk)
web.dev writes: "The blog post compares standard javascript file include method and the script DOM element method in detail.
Around 80% of the end-user response time is spent on the front-end. A fair share of this time is spent on downloading components of the page like scripts, Flash, stylesheets, images etc. Javascript takes majority of the loading time of a webpage because scripts block parallel downloading and rendering in the page. Even if you do not have a lot of Javascript files to load on your webpage they can still block loading other content on your page while they load."