如何将 JavaScript 类型数组转换为 JavaScript 数组

How to convert a JavaScript Typed Array into a JavaScript Array

提问by stuax

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

我有一个 JavaScript Float32Array，我想将它转换成一个常规的 JavaScript 数组。我怎样才能做到这一点？

回答by Anoop

Use Array.prototype.slice to convert float32Arrayto Array. jsfiddle

使用 Array.prototype.slice 转换float32Array为 Array。提琴手

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

回答by Cody Piersall

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

如果您不需要支持旧浏览器（不幸的是，包括 IE），您可以使用Array.from，它已添加到 ES6：

var array = Array.from(floatarr);

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

这现在适用于每个浏览器的新版本（IE 除外），并且也适用于所有主要的移动浏览器。

回答by Denys Séguret

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

您可以将它用作任何数组，这意味着您可以这样做：

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.

但通常将其用作 Float32Array 而不是转换它更有效。

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

如果您不想混合不同类型的值，请不要转换它。