JavaScript SEO should be a straightforward problem by now. It still isn’t. Ecommerce brands continue to run into the same crawling, rendering, and indexing challenges they faced five years ago, now compounded by headless architectures, AI-driven recommendations, and modern frameworks that can easily hide key content from Google. The leading ecommerce companies have learned how to deliver fast, modern JavaScript experiences without losing organic search visibility. Below are five takeaways worth borrowing. 1. Chewy uses JavaScript to enhance UX Chewy is one of the biggest online sellers of pet food and supplies in the U.S. They rely on Next.js, a React-based framework that supports server-side rendering, static site generation, and full-stack capabilities. This setup allows them to include critical content directly in the initial HTML response instead of depending solely on client-side JavaScript. Consider a product page like the Benebone Wishbone Chew Toy. If you open View Page Source, you’ll find the product title, description, price, reviews, Q&A, and breadcrumb navigation all embedded in the original HTML. Googlebot can see this content immediately, without waiting for JavaScript rendering. That matters because if a crawler like Googlebot runs into rendering problems, the essential information is still available on the first crawl. With the growth of AI chatbots, many of which still don’t execute JavaScript, this approach has become even more critical. Of course, not every element has to be in the initial HTML. Without client-side JavaScript, the page would feel rigid and outdated. For example, the “Compare Similar Items” carousel is loaded on the client side, mainly…