How Does Google Crawl and Index JavaScript?
In starting search engine crawlers like Google were not very good at crawling or indexing, but over time with the help of automation, they have improved it exponentially. Given points below are considered by Google while it crawls and indexes JavaScript.
- Initial Fetch and Crawling: When Googlebot gets a URL for crawling its HTML content, it will send a request to the web server to fetch the data. Googlebot will easily fetch the initial HTML content if the webpage is highly dependent on JavaScript.
- Rendering- JavaScript Execution: When the previous fetching and crawling part is done, Googlebot will execute JavaScript to render the page and get the rendered DOM (Document Object Model).
- Rendering- Content Extraction: Once the DOM is rendered, Googlebot extracts the content, links, and other information from that page. After that, it will start its process of analyzing the content for indexing.
- Indexing: Google search engine will index the extracted content. The indexed content will be used to rank the page in search results.
This is how Google again and again checks the URLs to crawl and index the Websites.
How to Optimize Your Website SEO Using JavaScript
Most of the websites nowadays are built on JavaScript and its frameworks and almost every browser has the JavaScript engine, this is a perfect correlation to know how important it is to use JavaScript SEO to improve your website ranking and visibility to a large number of users.
This article will be helpful not just for developers but for content creators to know how to optimize their website for SEO using JavaScript, which involves various factors and best practices.
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