Unsigned right shift assignment (>>>=)

The unsigned right shift assignment (>>>=) operator performs unsigned right shift on the two operands and assigns the result to the left operand.

{{InteractiveExample("JavaScript Demo: Unsigned right shift assignment (>>>=) operator")}}

```js interactive-example let a = 5; // 00000000000000000000000000000101

a >>>= 2; // 00000000000000000000000000000001 console.log(a); // Expected output: 1

let b = -5; // -00000000000000000000000000000101

b >>>= 2; // 00111111111111111111111111111110 console.log(b); // Expected output: 1073741822

## Syntax

```js-nolint
x >>>= y

Description#

x >>>= y is equivalent to x = x >>> y, except that the expression x is only evaluated once.

Examples#

Using unsigned right shift assignment#

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

let b = -5; // (-00000000000000000000000000000101)
b >>>= 2; // 1073741822 (00111111111111111111111111111110)

let c = 5n;
c >>>= 2n; // 1n

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• Assignment operators in the JS guide
• Unsigned right shift (>>>)