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Catalog108 / challenges / dynamic/lazy-images

Lazy-loaded images

intermediate Matching curriculum →

What this challenge teaches

Teaches: Images use data-src and a tiny placeholder src until scrolled into view. Plain scraping picks up placeholders.

Expected output: Trigger lazy-load (scroll or use IntersectionObserver-aware client) and read the real src after.

Submit your scraper's JSON output to /challenges/dynamic/lazy-images/grade (grader endpoint is part of a later phase; URL is reserved now).

Scroll down. Images use data-src; src is the placeholder until visible.

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