Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

jsfuck issue...

See original GitHub issue

>>> js2py.eval_js('(+(+!+[]+[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+[!+[]+!+[]]+[+[]])+[])[+!+[]]')
u'1'
>>>

should translate to . instead it translated to 1

Issue Analytics

State:
Created 4 years ago
Comments:22 (4 by maintainers)

Top GitHub Comments

1reaction

ghostcommented, Apr 5, 2019

I’m working on it.

doubleToExponentialCString: https://github.com/v8/v8/blob/9010424ff584c41d64a6589a7914f5bba1332db4/src/conversions.cc#L1115 CreateExponentialRepresentation: https://github.com/v8/v8/blob/9010424ff584c41d64a6589a7914f5bba1332db4/src/conversions.cc#L1083

tests: https://github.com/v8/v8/blob/master/test/webkit/number-toExponential.js

1reaction

PiotrDabkowskicommented, Apr 3, 2019

Thanks, I will not have time to work on it in the next week (enough coding at work…). The issue is due to the difference in Number.prototype.toString implementation between JS and Python. They are quite similar, but there are edge cases. Exact specification for JS documentation can be found here: https://www.ecma-international.org/ecma-262/5.1/#sec-9.8.1

Top Results From Across the Web

Issues · aemkei/jsfuck - GitHub

Contribute to aemkei/jsfuck development by creating an account on GitHub. ... Loading jsfuck causes problems with webpages ，May cause the page to be...

JSF*ck - Does code weirdness affect execution performance?

For those who are reading this out of the context, I'm going to spend a while explaining the problem before jumping to tests....

JSFuck - Write any JavaScript with 6 Characters: []()!+

JSFuck is an esoteric and educational programming style based on the atomic parts of JavaScript. It uses only six different characters to execute...

@gsmlg/jsfuck - npm

JSFuck is an esoteric and educational programming style based on the atomic parts of JavaScript. It uses only six different characters to ...

Interview with Martin Kleppe - Esoteric.Codes

Martin Kleppe is best known as the creator of JSFuck, an esoteric coding style ... and many people came up with their own...