(**=)

Baseline

20173

(**=) 2

let a = 3;

console.log((a **= 2));
// : 9

console.log((a **= 0));
// : 1

console.log((a **= "hello"));
// : NaN

x **= y

x **= y x = x ** y x

let bar = 5;
bar **= 2; // 25

let baz = 5;
baz **= "foo"; // NaN

let foo = 3n;
foo **= 2n; // 9n
foo **= 1; // TypeError: Cannot mix BigInt and other types, use explicit conversions


ECMAScript 2027 LanguageSpecification # sec-assignment-operators

MDN

MDN 202592

GitHub