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---
title: Atomics.store()
slug: Web/JavaScript/Reference/Global_Objects/Atomics/store
page-type: javascript-static-method
browser-compat: javascript.builtins.Atomics.store
---
{{JSRef}}
The **`Atomics.store()`** static
method stores a given value at the given position in the array and returns that value.
{{EmbedInteractiveExample("pages/js/atomics-store.html")}}
## Syntax
```js-nolint
Atomics.store(typedArray, index, value)
```
### Parameters
- `typedArray`
- : An integer typed array. One of {{jsxref("Int8Array")}}, {{jsxref("Uint8Array")}},
{{jsxref("Int16Array")}}, {{jsxref("Uint16Array")}}, {{jsxref("Int32Array")}},
{{jsxref("Uint32Array")}}, {{jsxref("BigInt64Array")}}, or
{{jsxref("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
- {{jsxref("TypeError")}}
- : Thrown if `typedArray` is not one of the allowed integer types.
- {{jsxref("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
{{Specifications}}
## Browser compatibility
{{Compat}}
## See also
- {{jsxref("Atomics")}}
- {{jsxref("Atomics.load()")}}