Atomics.load()
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.load()
静态方法返回数组中指定位置的值。
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;
// 5 + 2 = 7
console.log(Atomics.add(uint8, 0, 2));
// Expected output: 5
console.log(Atomics.load(uint8, 0));
// Expected output: 7
语法
js
Atomics.load(typedArray, index)
参数
typedArray
-
一个整数类型数组。
Int8Array
、Uint8Array
、Int16Array
、Uint16Array
、Int32Array
、Uint32Array
、BigInt64Array
或BigUint64Array
之一。 index
-
typedArray
中的要加载的位置。
返回值
给定位置的值(typedArray[index]
)。
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 load()
js
const sab = new SharedArrayBuffer(1024);
const ta = new Uint8Array(sab);
Atomics.add(ta, 0, 12);
Atomics.load(ta, 0); // 12
规范
Specification |
---|
ECMAScript® 2025 Language Specification # sec-atomics.load |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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load |
Legend
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- Full support
- Full support
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