Bitwise XOR 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 bitwise XOR assignment (^=
) operator performs bitwise XOR on the two operands and assigns the result to the left operand.
Try it
let a = 5; // 00000000000000000000000000000101
a ^= 3; // 00000000000000000000000000000011
console.log(a); // 00000000000000000000000000000110
// Expected output: 6
Syntax
js
x ^= y
Description
x ^= y
is equivalent to x = x ^ y
, except that the expression x
is only evaluated once.
Examples
Using bitwise XOR assignment
js
let a = 5; // (00000000000000000000000000000101)
a ^= 3; // (00000000000000000000000000000011)
console.log(a); // 6 (00000000000000000000000000000110)
let b = 5; // (00000000000000000000000000000101)
b ^= 0; // (00000000000000000000000000000000)
console.log(b); // 5 (00000000000000000000000000000101)
let c = 5n;
c ^= 3n;
console.log(c); // 6n
Specifications
Specification |
---|
ECMAScript® 2025 Language Specification # sec-assignment-operators |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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Bitwise XOR assignment ( x ^= y ) |
Legend
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- Full support
- Full support
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