Reverse XOR operator in JavaScript?

Question

I have 2 variables, x and y.

I am doing z = x^y.

Now assuming I know only z and y, How can I get x back? Is there an opposite to ^ in JavaScript?

Try this at http://stackoverflow.com/questions/4540422/why-is-there-no-logical-xor-in-javascript/18064899#18064899 — asiby, Aug 05 '13 at 20:54

Oliver Charlesworth · Accepted Answer · 2013-04-07T19:29:45.173

17

Yes, ^ is its own inverse.

x == (x^y)^y

edited Apr 07 '13 at 19:29

answered Apr 07 '13 at 19:18

Siegen · Answer 2 · 2023-02-16T17:41:33.807

0

Given z=x^y

You can get x by doing x=z^y

edited Feb 16 '23 at 17:41

answered Feb 09 '23 at 15:44

Siegen

2 Answers2