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Right shift assignment

The right shift assignment operator (>>=) moves the specified amount of bits to the right and assigns the result to the variable.

Syntax

Operator: x >>= y
Meaning:  x   = x >> y

Examples

Using right shift assignment

let a = 5; //   (00000000000000000000000000000101)
a >>= 2;   // 1 (00000000000000000000000000000001)

let b = -5; //  (-00000000000000000000000000000101)
b >>= 2;  // -2 (-00000000000000000000000000000010)

Specifications

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Right shift assignment (x >>= y) 1 12 1 3 3 1
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
Right shift assignment (x >>= y) 1 18 4 10.1 1 1.0
Server
Node.js
Right shift assignment (x >>= y) 0.1.100

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Right_shift_assignment