How do search engines crawl JavaScript?

@aniyah 

Search engines crawl JavaScript by using web crawlers that can interpret and execute JavaScript code, just like a browser does. However, there are some limitations to this process and not all JavaScript code is crawled and indexed equally by all search engines.

To make sure your JavaScript-based content is crawlable and indexable, you should follow these best practices:

• Serve your content both in HTML and JavaScript to ensure that search engines can access it.
• Use server-side rendering to pre-render the HTML content and send it to the search engine's crawler.
• Avoid using techniques that dynamically update content after the page has loaded, such as single-page applications and infinite scroll, as these can limit a search engine's ability to crawl your content.
• Use descriptive and relevant URLs for your pages and ensure that the URL structure is easy for search engines to understand.

By following these best practices, you can help ensure that your JavaScript-based content is accessible to search engines and can improve its visibility in search results.