Google’s Martin Splitt keeps his JavaScript search engine marketing video series with an episode explaining why JavaScript is worth stressing about.
He also identifies the uses of JavaScript that aren’t worth annoying approximately.
It’s not always necessary to be concerned about JavaScript in search engine marketing.
As Splitt explains, SEOs must be worried when working with a “JavaScript site.”
What is a JavaScript site?
A website online that uses JavaScript does now not usually qualify as a “JavaScript website.”
If all primary content material may be considered without loading JavaScript, then you have nothing to fear about.
On the other hand, if JavaScript is essential for displaying important content material, you’re running with a “JavaScript website online.”
Another form of JS website online is a single-page app, which includes a shell typically with numerous perspectives showing unique content.
If you’ve ever used Instagram on a cellular browser, you have a perfect example of a single web page app.
When Instagram is loaded in a cell browser, the header and footer are static (the shell), while JavaScript fetches and shows the primary content.
When is JavaScript relevant for search engine marketing?
JavaScript becomes SEO while getting loaded, modifdynamically loading, or modifying critical content material. It should be capable of seeing all content material on a web page, consisting of the elements that can be delivered using JavaScript. So, if you could view the web page supply and see all essential content, JavaScript wouldn’t be relevant to search engine optimization. Suppose you can handily see some of the content inside the page source; it will be indexed throughout the first wave of indexing. The content material that needs to be rendered using JavaScript will be listed throughout the second wave. Splitt explained two waves of indexing for JavaScript content in his previous video. In later episodes, Splitt will move into extra detail about improving JavaScript rendering in the second wave of indexing.
