How to go from Blob to ArrayBuffer

Question

I was studying Blobs, and I noticed that when you have an ArrayBuffer, you can easily convert this to a Blob as follows:

var dataView = new DataView(arrayBuf         


        

Answer 1

The Response API consumes a (immutable) Blob from which the data can be retrieved in several ways. The OP only asked for ArrayBuffer, and here's a demonstration of it.

var blob = GetABlobSomehow();

// NOTE: you will need to wrap this up in a async block first.
/* Use the await keyword to wait for the Promise to resolve */
await new Response(blob).arrayBuffer();   //=> 

alternatively you could use this:

new Response(blob).arrayBuffer()
.then(/*  */);

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Note: This API isn't compatible with older (ancient) browsers so take a look to the Browser Compatibility Table to be on the safe side ;)