Writing JavaScript with Only Six Characters(javascript.christmas)
javascript.christmas
Writing JavaScript with Only Six Characters
https://javascript.christmas/2019/17
7 comments
I don't write alot of blog posts. Appreciate any feedback you might have :)
I love it. But I think it cheats a tiny bit by getting a word that requires only characters from "false". It means you're demonstrating the same trick four times.
Maybe you could do a kind of proof:
1. This is how you get any character 2. This is how you call eval() 3. QED
Maybe you could do a kind of proof:
1. This is how you get any character 2. This is how you call eval() 3. QED
Yeah the ability to get any character would really show more of how this works
Please run simple code to verify accuracy before publishing it.
The unary plus operator coerces undefined to NaN, not to zero as your article states.
The unary plus operator coerces NaN to NaN, not to zero as your article states. (Remember that NaN is already a number, despite its name.)
If you need to coerce any falsy value to 0, the simplest way is to use bitwise operators. If you want to do it the six character way, I guess use Math.imul
The unary plus operator coerces undefined to NaN, not to zero as your article states.
The unary plus operator coerces NaN to NaN, not to zero as your article states. (Remember that NaN is already a number, despite its name.)
If you need to coerce any falsy value to 0, the simplest way is to use bitwise operators. If you want to do it the six character way, I guess use Math.imul
It’s great my guy! Love the recap at the end
There's Dwitter, a minimalist JavaScript code community, where we use these kind of tricks to write interesting code, demos and concepts with just 140 characters or less: https://dwitter.net/
This is fascinating! Thanks for the share, I had no idea this even existed. Some of the posts are impressive too. Walther is known for their short reset triggers on their handguns for example.
I've just posted a working code on Dwitter based on this "JavaScript with Only Six Characters", it shows 1e+100 turning into Infinity. https://www.dwitter.net/d/16881
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Pretty good explanation.
For those who want to dive deeper, there is an esoteric language based on these concepts: http://www.jsfuck.com/
Is there a limit to what one can do with these six characters? Like, now we're reading values from the string "false". We also could read from "true", and maybe undefined (how?). But can one do more? If one can generate "window", one should be able to call functions through window["functionName"]() and do general computing with this, I think?
As I understand, there's no limit to what you can do with these six characters.
It quickly gets more complicated though, and will require alot more code:
"undefined": [][![]]+[] (empty array accessed at index 0 turned into string)
"NaN": +{}
"[object Object][object Object]": {}+{}
.. etc
See the full list here:
https://github.com/aemkei/jsfuck/blob/master/jsfuck.js
It quickly gets more complicated though, and will require alot more code:
"undefined": [][![]]+[] (empty array accessed at index 0 turned into string)
"NaN": +{}
"[object Object][object Object]": {}+{}
.. etc
See the full list here:
https://github.com/aemkei/jsfuck/blob/master/jsfuck.js
you can obtain undefined by accessing the first element of an empty array. `([])[+!![]]`
you can make the final code slightly shorter by obtaining the "e" from "true" instead of "false". `(!![]+[])[+!+[]+!+[]+!+[]]`
Great article. I've seen articles about this concept before, but none of these had such a thorough explanation!
World’s most unreadable embedded programming language?