<!--noindex--> <!--/noindex--> what will happen if this code is there in the html pages ?? will the content within this tags will not be indexed in google or ????
The <!-- and --> are HTML comments and are completely ignored regardless of what's inside. They are there for web developers to comment their code to make it easier for other to read. I think a long long time ago (in a galaxy far far away), HTML comments were actually read by search engines and some webmasters used to stuff keywords in there but this is now a thing of the past.