Google has removed a whole section from its JavaScript SEO documentation because it was outdated and Google says loading content with JavaScript does not make it hard for Google Search.

JavaScript is the second-largest contributor to page weight, behind images, which means it can play a major role in slowing down the speed of your mobile site. Here's how you can reduce your reliance ...

Always obsessed with speed, Google shared today that it has improved the way Chrome loads Javascript files in the latest version of Chrome, now loading at the same time as beginning to parse them.