来自 ArrayBuffer 的普通 Floats 数组

Question

There are a number of questions and resources about getting Typed arrays from an ArrayBuffer . An example: How to get an array from ArrayBuffer? . I need an actual array

I tried Array.from(myArrayBuffer) and get this:

//  buf is an ArrayBuffer(878468)
Array.from(buf) //  Array(0)  length: 0

Answer 1

It seems there were no direct conversion from ArrayBuffer to a vanilla array. Two steps are needed

• ArrayBuffer -> TypedArray
• Array.from(typedArray)

So:

     let ab = new ArrayBuffer(1000)
     let arr = Array.from(new Float32Array(ab))