What does JavaScript >> stand for? [duplicate]

Answer 1

Bitwise right shift

Looks like PHP has this operator too:

http://us2.php.net/operators.bitwise

Answer 2

Other answers are correct, but this may be of help to you: If x is positive then

x >> y

is the same as

floor(x / (2 ** y))

where 2**y is 2 raised to the power y.

E.g. x >> 3 is the same as floor(x / 8).

Answer 3

It is a sign-propagating right shift. Many, many, languages have this operator.

Wikipedia has a good article on the subject. My first link has a few examples and an explanation.

Answer 4

It's a bit shifting operator: http://www.contactor.se/~dast/fpl-old/language/shift.HTML