Is HTML some type of prerequisite language you must know before learning JavaScript

Answer 1

HTML is the main language in web development. It is necessary to make use of JavaScript, CSS, JQuery, and PHP.

Answer 2

Well, not necessarily, Javascript is a language that can be used for it's logic on top of objects, this is why you could develop games on "Unity" with it, which is a free game engine, but JavaScript was thought for HTML's DOM events handling, transforming static web pages (HTML) that only look pretty (CSS on top) into a dynamic web page (JavaScript on top) capable of actually doing something for the user. Hope this is the answer for you Malik.