Are article text most incessantly populated with an ajax count on to database?

I am attempting to make your mind up out if how articles on info sites are most incessantly populated.

Prefer as an illustration this text:

I’m able to't decide out if the text is populated by a count on to a database, or if it's most incessantly done without lengthen right throughout the html with out the database.

Thank you.

Are article text usually populated with an ajax request to database?