[Inori]

It's evaling a string decoded from binary which is further further encoded with http://www.jsfuck.com/.

For the record, you saw me write that by hand in class

So could you put it even further?

Say, put it into base64 before putting it into binary?

oh, for sure. You could encode 'console.log("Hello, world!");' to base64, then binary, then translate it to whatever you want to call my mess. The only additional step would be wrapping the "message" and replace() call with atob() to decode the base64.

Code:

eval(    atob(        +[+[]]+[+ ...        .replace(/[01]{8}/g,b=>{return String.fromCharCode(parseInt(b,2));})    ) )