将Uint8Array转换为Javascript中的数组 [英] Convert Uint8Array to Array in Javascript

问题描述

我有Uint8Array实例，其中包含某些文件的二进制数据.
我想将数据发送到服务器，在服务器上将其反序列化为byte [].
但是，如果我发送Uint8Array，则会出现反序列化错误.

I have Uint8Array instance that contains binary data of some file.
I want to send data to the server, where it will be deserialized as byte[].
But if I send Uint8Array, I have deserialization error.

因此，我想将其转换为Array，因为Array已很好地反序列化.
我这样做如下:

So, I want to convert it to Array, as Array is deserialized well.
I do it as follows:

    function uint8ArrayToArray(uint8Array) {
        var array = [];

        for (var i = 0; i < uint8Array.byteLength; i++) {
            array[i] = uint8Array[i];
        }

        return array;
    }

此功能可以正常工作，但对于大文件而言效率不高.

This function works fine, but it is not very efficient for big files.

问题:是否有更有效的方法来转换Uint8Array-> Array?

推荐答案

您可以在支持

You can use the following in environments that support Array.from already (ES6)

var array = Array.from(uint8Array)

如果不支持，则可以使用

When that is not supported you can use

var array = [].slice.call(uint8Array)

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