JavaScript is a high-level programming language. It is not a compiled language, but it is a translated language. It is used to create interactive websites. JavaScript can execute not only in the browser, but also on the server, or actually on any device that has a special program called the JavaScript engine. In my point of view, JavaScript is easier than java. If you want to become a web developer, you need to learn JavaScript. Prerequisites for learning JavaScript are a little familiar with the HTML and CSS markup languages.