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Use the waitFor parameter to delay scraping until a specific HTML element appears on the page. This is useful when the target content is rendered dynamically with JavaScript — for example, when you need to wait for product details, prices, or reviews to load after initial page render.

How It Works

  • waitFor takes a CSS selector as its value (e.g. .product-title, #main, div[data-loaded=true])
  • Scraping will begin only after the element is detected in the DOM
  • If the element does not appear the request will fail

When to Use

  • The page loads blank or incomplete without JS rendering
  • You need to wait for a modal, tab, or dynamically loaded section to appear
  • You want to avoid capturing partial content due to async loading delays

Example Request

In this case, scraping will start only after .product-details is present on the page.

Notes

  • This feature requires "jsRendering": true
  • Combine with wait (time delay in ms) for extra control if needed
  • If the selector never appears, you’ll receive a 400 response with an appropriate error