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Atomics.store() - JavaScript | MDN

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Atomics.store() 静态方法将给定的值存储在数组中的指定位置，并返回该值。

// 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

一个整数类型数组。Int8Array、Uint8Array、Int16Array、Uint16Array、Int32Array、Uint32Array、BigInt64Array 或 BigUint64Array 之一。

index

typedArray 中的要存储 value 的位置。

value

要存储的数字。

已存储的值。

TypeError

如果 typedArray 不是允许的整数类型数组之一，则抛出该异常。

RangeError

如果 index 超出 typedArray 的范围，则抛出该异常。

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

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

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