What exactly does the Javascript ~~ operator do?

Asked Jan 08 '13 at 13:48

Active Aug 17 '13 at 23:10

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Possible Duplicate:
What is the “double tilde” (~~) operator in JavaScript?

I was wondering for a time now what exactly the ~~ operator does in javascript.

It seems it does essentially the same as Math.floor at least when looking at the result.

~~(1.2345) //1
Math.floor(1.2345) // 1

The other thing is that i don't find anything about it anywhere. Well, google doesn't let one search for "~~"

But also when looking at the ECMA Script Specification i can't seem to find a single entry mentioning ~~

And running a benchmark on both gives a surprising result too. As Math.floor is

slower for me than ~~.

Could anyone please shine a light on this?
Thanks in advance =)

edited Jun 20 '20 at 09:12

Community

asked Jan 08 '13 at 13:48

Moritz Roessler

3

Google-fu: "double tilde" – Alex K. Jan 08 '13 at 13:50
Refer http://stackoverflow.com/questions/5971645/what-is-the-double-tilde-operator-in-javascript – Ankur Jan 08 '13 at 13:52
Nice, thanks for the Link, that was exactly what i was looking for. Shame on me that i didn't thought of googling "double tilde" – Moritz Roessler Jan 08 '13 at 13:54

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