JavaScript SEO
JavaScript SEO is the practice of making content that relies on JavaScript accessible to search engines. Because crawlers must render JavaScript to see client-side content, rendering delays or errors can hide pages from the index.
Why It Matters
Modern frameworks build much of the page in the browser, so content that is not present in the initial HTML may be crawled late or missed entirely. Server-side rendering or prerendering ensures critical content and links are visible to crawlers immediately.
Common Mistake
Assuming search engines render everything reliably. Rendering is queued and resource-limited, so key content, links, and metadata injected only by client-side JavaScript can be delayed or dropped from indexing.