Non alphanumeric JavaScript

This post is a translation of JavaScript no alfanumérico which was linked by Diario Linux some days ago so I decided to write an English version. Enjoy it!

I have a discussion with Adri about if JavaScript is a good programming language or not. In one of our conversations, Adri shows criticism about JS’ weak type and links the article Brainfuck beware: JavaScript is after you! by Patricio Palladino.

I encourage the lecture. It is quite interesting.

In short, Patricio has created a tool to convert a JS script into another equivalent formed by symbols +[](){}! only. Don’t you believe me? Try to enter this in a JS console from any browser (ensure you are visiting a web site).

[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((+{}+[])[+!![]]+(![]+[])[!+[]+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[+[]]+([][+[]]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()([][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()(({}+[])[+[]])[+[]]+(!+[]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[]))+(+!![]+[])+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[+[]]+([][+[]]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()([][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()(({}+[])[+[]])[+[]]+(!+[]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])))()

It should have appeared a dialog with the number 1. What the hell happened?

JavaScript no alfanumérico

Tengo una discusión con Adri acerca de si JavaScript es un buen lenguaje o no. En una de nuestras conversaciones critica el tipado débil de JS y enlaza el artículo Brainfuck beware: JavaScript is after you! de Patricio Palladino.

Os recomiendo encarecidamente su lectura. Es muy interesante.

Resumiendo, Patricio ha creado una herramienta con la que convertir un script JS a otro, equivalente, formado únicamente por símbolos +[](){}! ¿No me creeis? Probad a introducir esto es una consola JS de un navegador cualquiera (la de Firebug o la de Chrome servirán).

[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((+{}+[])[+!![]]+(![]+[])[!+[]+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[+[]]+([][+[]]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()([][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()(({}+[])[+[]])[+[]]+(!+[]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[]))+(+!![]+[])+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[+[]]+([][+[]]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()([][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(![]+[])[!+[]+!![]+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+([]+[][(![]+[])[!+[]+!![]+!![]]+({}+[])[+!![]]+(!![]+[])[+!![]]+(!![]+[])[+[]]][({}+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]]+(![]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+[]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(!![]+[])[+[]]+({}+[])[+!![]]+(!![]+[])[+!![]]]((!![]+[])[+!![]]+([][+[]]+[])[!+[]+!![]+!![]]+(!![]+[])[+[]]+([][+[]]+[])[+[]]+(!![]+[])[+!![]]+([][+[]]+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]+!![]+!![]]+(![]+[])[!+[]+!![]]+({}+[])[+!![]]+({}+[])[!+[]+!![]+!![]+!![]+!![]]+(+{}+[])[+!![]]+(!![]+[])[+[]]+([][+[]]+[])[!+[]+!![]+!![]+!![]+!![]]+({}+[])[+!![]]+([][+[]]+[])[+!![]])())[!+[]+!![]+!![]]+([][+[]]+[])[!+[]+!![]+!![]])()(({}+[])[+[]])[+[]]+(!+[]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])))()