How to convert a JavaScript Typed Array into a JavaScript Array

Question

I have a JavaScript Float32Array, and I would like to convert it into a regular JavaScript Array. How can I do this?

Answer 1

You can use it as any array, which means you can do this :

var arr = [];
for (var i=0; i<myFloat32array.length; i++) arr[i] = myFloat32array[i];

But it's usually more efficient to use it as a Float32Array instead of converting it.

If you don't want to mix different types of values, don't convert it.

Answer 2

Use Array.prototype.slice to convert float32Array to Array. jsfiddle

var floatarr = new Float32Array(12);
var array =  Array.prototype.slice.call(floatarr);

Answer 3

If you don't need to support old browsers (including IE, unfortunately), you can use Array.from, which was added to ES6:

var array = Array.from(floatarr);

This now works in the new releases of every browser (except IE), and it works on all major mobile browsers too.