How do I create bit array in Javascript?

Question

What is the best way of implementing a bit array in JavaScript?

Answer 1

I don't know about bit arrays, but you can make byte arrays easy with new features.

Look up typed arrays. I've used these in both Chrome and Firefox. The important one is Uint8Array.

To make an array of 512 uninitialized bytes:

var arr = new UintArray(512);

And accessing it (the sixth byte):

var byte = arr[5];

For node.js, use Buffer (server-side).

EDIT:

To access individual bits, use bit masks.

To get the bit in the one's position, do num & 0x1