Why does JavaScript navigator.appName return Netscape for Safari, Firefox and Chrome?

Question

Why does navigator.appName return \"Netscape\" for Safari, Firefox and Chrome?

What do they have to do with the old browser Netscape? Could it be becaus

Answer 1

One can just search the navigator.userAgent for browser detection for IE 11 now and look for its layout engine. In my experience, it works fairly well. See this post.