What is JavaScript?
It is a programming language used to develop websites. JavaScript uses frameworks to make interactive web pages by controlling the behavior of a variety of elements on the page.
What Is JavaScript Site
If JavaScript is essential for displaying content, then you are working with a “JavaScript site.” On the other hand, if all the content mainly primary can be viewed without loading JavaScript, then you have nothing to worry about. So, we can say that a website that uses JavaScript can be a “JavaScript site” or can be not.
A single page app is another type of Is JavaScript Site. This site is consists of a shell (, the header and footer) with different views displaying dissimilar content. A good example of this type of JS site is Instagram. When Instagram is loaded in your mobile browser, the shells are static while JavaScript is used to get and display the primary content.
Know when is JavaScript relevant for SEO?
When JavaScript is being used to dynamically load or adjust critical content, it becomes relevant for search engine optimization (SEO). Preferably, Googlebot, search bot software used by Google must be able to find all the content on a web page, including the content that is being dynamically added using JavaScript. Therefore, if you can view the page source and find all critical content that means JavaScript is not relevant to SEO.
Can Google Crawl and Render JavaScript?
The search engine giant has claimed since 2014 that they are good at rendering JavaScript websites but always advised caution about this matter. Look at these quotes taken from the post “Understanding web pages better” Posted on Webmaster Central Blog.
“Sometimes things don’t go perfectly during rendering, which may negatively impact search results for your site . … Sometimes the JavaScript may be too complex or arcane for us to execute, in which case we can’t render the page fully and accurately . … Some JavaScript removes content from the page rather than adding, which prevents us from indexing the content.”
There Are Three Vital Factors At Play At This Time:
1) Crawlability (Ensure Google can crawl your website with a proper structure)
2) Renderability (Ensure Google is not struggling with rendering your site)
3) Crawl budget (Time taken by Google to crawl and render your website)
Search engines, including Google, are continuously evolving, so they will surely interpret your JavaScript faster and better in the future.
