javascript | operand code example

Example 1: js

JavaScript (JS) is a lightweight, interpreted, or just-in-time compiled
programming language with first-class functions. While it is most 
well-known as the scripting language for Web pages, many non-browser
environments also use it, such as Node.js, Apache CouchDB and Adobe
Acrobat.

Example 2: = js=

(req, res, next) = () =>