Fast JavaScript array operations

Question

Do any browsers currently support or plan to support fast array math operations, similar to what NumPy provides for Python? Here is an example to demonstrate what I mean:

var a = new NumericArray('uint32', [1, 2, 3, 4]);
var b = new NumericArray('uint32', [2, 2, 2, 2]);
var c = a.add(b); // c == [3, 4, 5, 6]

In that example, add is not meant to represent a function implemented in JavaScript. That would be trivial to write. It is meant to represent a function that is written in C (or whatever language the JavaScript implementation is written in) and is optimized specifically for math operations over the array.

Javascript is a standard, so you really should be asking if the next javascript standard is going to support this functionality. — Oded
– Oded, Commented Jun 25, 2010 at 21:33

Mark Byers · Accepted Answer · 2010-06-25 21:34:51Z

2

I don't think so, but Google are certainly interested in pushing the limits of what is possible in Javascript. If you are interested in safely running native code in the browser you might want to take a look at NaCl.

answered Jun 25, 2010 at 21:34

Mark Byers

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David Over a year ago

That looks very interesting. I'll have to play around with that a bit.

David · Accepted Answer · 2010-07-09 06:38:36Z

1

I'm the original poster, but I figured I'd share something I ran across. WebGL (implementations are already in progress by Mozilla and WebKit, see Lesson 0 at learningwebgl.com) introduces something called "Typed Arrays", which is sort of what I was looking for. The specification is available at https://cvs.khronos.org/svn/repos/registry/trunk/public/webgl/doc/spec/TypedArray-spec.html.

answered Jul 9, 2010 at 6:38

David

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Comments

sunny · Accepted Answer · 2015-11-04 20:16:52Z

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You can use use the built-in JavaScript array.map method

var numbers = [1, 4, 9];
var roots = numbers.map(Math.sqrt);
// roots is now [1, 2, 3], numbers is still [1, 4, 9]

edited Nov 4, 2015 at 20:16

sunny

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answered Nov 4, 2015 at 19:48

Shahid

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