Right shift assignment (>>=)
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The right shift assignment (>>=) operator performs right shift on the two operands and assigns the result to the left operand.
Try it
let a = 5; // 00000000000000000000000000000101 a >>= 2; // 00000000000000000000000000000001 console.log(a); // Expected output: 1 let b = -5; // 11111111111111111111111111111011 b >>= 2; // 11111111111111111111111111111110 console.log(b); // Expected output: -2 Syntax
js
x >>= y Description
x >>= y is equivalent to x = x >> y, except that the expression x is only evaluated once.
Examples
Using right shift assignment
js
let a = 5; // (00000000000000000000000000000101) a >>= 2; // 1 (00000000000000000000000000000001) let b = -5; // (-00000000000000000000000000000101) b >>= 2; // -2 (-00000000000000000000000000000010) let c = 5n; c >>= 2n; // 1n Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-assignment-operators |
