What's the most straightforward way to copy an ArrayBuffer object?

Question

I'm working with ArrayBuffer objects, and I would like to duplicate them. While this is rather easy with actual pointers and memcpy, I couldn't find any straightforward way to do it in Javascript.

Right now, this is how I copy my ArrayBuffers:

function copy(buffer) {     var bytes = new Uint8Array(buffer);     var output = new ArrayBuffer(buffer.byteLength);     var outputBytes = new Uint8Array(output);     for (var i = 0; i < bytes.length; i++)         outputBytes[i] = bytes[i];     return output; } 

Is there a prettier way?

Answer 1

I prefer the following method

function copy(src)  {     var dst = new ArrayBuffer(src.byteLength);     new Uint8Array(dst).set(new Uint8Array(src));     return dst; }