JSFuck is an esoteric programming language with a very limited set of characters: (,), [, ], +, !. While the name is derived from Brainfuck, the only similarity to Brainfuck is having a very small set of instructions. Very peculiar for an esoteric language, JSFuck is valid JavaScript code, and JSFuck programs can be run in any web browser that interprets JavaScript.
The challenge in JSFuck lies in recreating the full set of JavaScript functions using only these six characters, which is made possible by two properties of JavaScript:
It is a weakly typed programming language
It allows the evaluation...