Atomics.store

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

Syntax

Atomics.store(typedArray, index, value)

Parameters

typedArray

A shared integer typed array. One of Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, or Uint32Array.

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

• Throws a TypeError, if typedArray is not one of the allowed integer types.
• Throws a TypeError, if typedArray is not a shared typed array type.
• Throws a RangeError, if index is out of bounds in the typedArray.

Examples

var buffer = new ArrayBuffer(4);         // common buffer
var float32 = new Float32Array(buffer);  // floating point
var uint32 = new Uint32Array(buffer);    // IEEE754 representation

float32[0] = 0.5;
console.log("0x" + uint32[0].toString(16));

uint32[0] = 0x3f000000;   /// IEEE754 32-bit representation of 0.5
console.log(float32[0]);

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also

• Atomics
• Atomics.load()