Canonicalization happens both before and after rendering. Conflicting canonical signals between raw HTML and JavaScript output can cause unexpected indexing results. Google recommends setting the ...
Google's John Mueller warned one site owner not to load "not available" in the JavaScript before the actual content that loads is available. It can lead Google to believe the page does not exist, ...
Check rendered HTML instead of source code when diagnosing Google indexing issues. Fix JavaScript error pages that return 200 status codes instead of proper 404s ...