Atomics.store()

202112

Atomics.store()

// Create a SharedArrayBuffer with a size in bytes
const buffer = new SharedArrayBuffer(16);
const uint8 = new Uint8Array(buffer);
uint8[0] = 5;

console.log(Atomics.store(uint8, 0, 2));
// Expected output: 2

console.log(Atomics.load(uint8, 0));
// Expected output: 2

Atomics.store(typedArray, index, value)

typedArray: Int8ArrayUint8ArrayInt16ArrayUint16ArrayInt32ArrayUint32ArrayBigInt64Array BigUint64Array
index: typedArray value
value

TypeError: typedArray
RangeError: index typedArray

store()

const sab = new SharedArrayBuffer(1024);
const ta = new Uint8Array(sab);

Atomics.store(ta, 0, 12); // 12


ECMAScript 2027 LanguageSpecification # sec-atomics.store

Atomics
Atomics.load()

MDN

20251023 MDN

GitHub

JavaScript
Atomics