Extracting Data from JavaScript

Many modern websites don't load all their content at once. Instead, they use JavaScript to fetch data and update the page after it initially loads. This is called dynamic content.

Traditional scraping tools like Requests and BeautifulSoup only see the initial HTML. They miss anything JavaScript loads later.

JavaScript can load new data in several ways:

• AJAX Calls: Asynchronous JavaScript and XML. The browser requests data from a server in the background without reloading the entire page.
• DOM Manipulation: JavaScript directly adds, removes, or modifies elements in the page's structure (Document Object Model).
• Single-Page Applications (SPAs): Entire websites built to dynamically load content and navigate without full page refreshes.

This dynamic loading makes scraping more complex.