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Showing content from http://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Atomics/load below:

Atomics.load() - JavaScript | MDN

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Atomics.load() 静态方法返回数组中指定位置的值。

// 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

Atomics.load(typedArray, index)

给定位置的值（typedArray[index]）。

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.add(ta, 0, 12);
Atomics.load(ta, 0); // 12

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