Atomics.store()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since December 2021.
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。
尝试一下
// 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
语法
js
Atomics.store(typedArray, index, value)
参数
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。
返回值
已存储的值。
异常
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。
示例
使用 store()
js
const sab = new SharedArrayBuffer(1024);
const ta = new Uint8Array(sab);
Atomics.store(ta, 0, 12); // 12
规范
Specification |
---|
ECMAScript® 2025 Language Specification # sec-atomics.store |
浏览器兼容性
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- Full support
- Full support
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