> Status codes, I am displaying the list because mostly on a JavaScript driven application you don't want other codes than 200 (besides media).
What? Why? Regardless of the programming language used to generate content, the standard, well known HTTP status codes should be returned as expected . If your JS served site, gives me a 200 code when it should be a 404, you're wrong.
I think you are misunderstanding, your application is expected to give mostly 200s codes, if you get a 404, then a link is broken or a page misbehaving which is exactly why that page url is displayed on the console with a warning.
