There were a few interactive scripts, usually interacting with a form as an UI. The first JS book, I knew, was the "Official Netscape JavaScript Book" (1996), w

There were a few interactive scripts, usually interacting with a form as an UI. The first JS book, I knew, was the "Official Netscape JavaScript Book" (1996), which was based on Netscape 3 beta. This one featured a pretty complex area code application as a demonstration object and things like order forms. I started pretty much with the introduction of NS3, when NS2 and JavaScript1.0 were still the common platform. Fun fact, for a year or so, you'd frequently include a script twice, once in a simpler form for NS2 and similar, and once targeting Netscape 3 (and, later, IE3) using a `<script language="javascript1.1">` tag, which was ignored by the earlier browsers, implementing a more complex version of the same functions. (This scheme was used again, when DHTML became a thing, this time using the `language="javascript1.2"` attribute. However, this switch came with a few caveats, since it also activated some rather odd behavior, like negative zero as a numeric value, which could break a few things.)