Learn ECMAScript - Second Edition

Using the Atomics.or(typedArray, index, value) method

Similar to bitwise AND, Atomics.or method performs a bitwise OR:

const sab = new SharedArrayBuffer(1);const arr = new Uint8Array(sab);arr[0] = 5; // 5 is 0101 in binary.Atomics.or(arr, 0, 12); // 12 is 1100 in binaryconsole.log(Atomics.load(arr, 0));

Here, Atomics.or method performed a bitwise OR between arr[0] and the number 12.

The output is:

13