JavaScript Rendering Challenges

Modern websites often use JavaScript to load content dynamically. This creates challenges for traditional scraping approaches.

The Problem

How JavaScript Loading Works

Detecting JavaScript-Rendered Content

Solution Options

Finding Hidden APIs

When to Use Browser Automation

Common JavaScript Frameworks

SSR vs CSR

Quick Test

Key Takeaways

• Many modern sites render content with JavaScript
• requests.get() only fetches the initial HTML, not JS-rendered content
• Always check if content is in the HTML source first
• Look for hidden APIs in Network DevTools - often the best solution
• Use Selenium or Playwright when browser automation is needed
• SSR sites may have content in initial HTML even with React/Vue
• Finding the API is almost always faster than browser automation