Unsigned right shift assignment (>>>=)
{{jsSidebar("Operators")}}
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: Expressions - Unsigned right shift assignment operator")}}
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
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}}