Oh, did I misunderstand what he meant by "this era"?
I would assume the proper way to phrase it would be "that era" if he meant the 60's, although he did use "ran" which is the past tense. He also mentioned JavaScript, which didn't even exist in that era, so I guess I'm confused by the entire statement.
Edit: by 'he' I guess I meant 'you'. Which means you did mean to refer to the 60's.