- It can be used to add features to your website, like form validation, interactive maps, and real-time search results.
- It can be used to interact with web APIs, which will let you add even more external functionality to you site. Some examples of this includes social media sharing buttons, weather widgets, or news feeds.
According to Google’s John Mueller, recommended that you keep the <head> HTML element section “clean” so that search crawlers are able to understand your site. This advice was shared on a Reddit thread when somebody asked if HTML code placement could cause problems in terms of SEO.
So, the short answer is, the placement of HTML is important to SEO, especially f it doesn’t appear at the top of the page.
“The html headers (<head>) should be pretty much on top. I’d move any JS to below the HTML headers, and check with the rendering tool in search console that the JS doesn’t mess up the <head> section.”