Always test your pages using Google’s own tools and third-party resources to view the rendered HTML to make sure all your content is showing up. Google has come a long way with rendering JavaScript.

Why JavaScript Can Be A Problem We know that to ingest information, Googlebot will discover a page, crawl it, parse and index it. For JavaScript, the crawler needs to “render” the code.

JavaScript (aka scripts or JS) is one of the triumvirate of technologies that make web pages (and web apps) work. The HTML (Hypertext Markup Language) controls the structure and content of the webpage ...

Google says it has begun requiring users to turn on JavaScript in order to use Google Search, possibly in an effort to block certain SEO tools.