JavaScript challenges, also known as JS challenges, are digital barriers that prevent automated bots from accessing a website's data by embedding scripts that need execution by a browser.
These challenges act as a 'prove you're human' test, requiring scrapers to execute specific JavaScript code within the page to access the juicy content.
Web servers use JavaScript challenges as stealthy mechanisms to identify and block bots, ensuring that only legitimate users can retrieve content from their pages.
For instance, Cloudflare's Managed Challenge feature utilizes JS challenges to add an extra layer of protection against automated scraping, embedding scripts that browsers must run for access.
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