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.

The Atomics.store() static method stores a given value at the given position in the array and returns that value.

Try it

Syntax

js
Atomics.store(typedArray, index, value)

Parameters

typedArray

An integer typed array. One of Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array.

index

The position in the typedArray to store a value in.

value

The number to store.

Return value

The value that has been stored.

Exceptions

TypeError

Thrown if typedArray is not one of the allowed integer types.

RangeError

Thrown if index is out of bounds in the typedArray.

Examples

Using store()

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

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

Specifications

Specification
ECMAScript Language Specification
# sec-atomics.store

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
store

Legend

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Full support
Full support

See also