Arraybuffer vs blob性能

Question

Which has better performance?

I'm getting data and posting it to a different url, I can send both types but which should I choose? The data is a pdf file

Answer 1

Which has better performance?

There should be virtually no difference.

I can send both types but which should I choose for a pdf file?

As a Blob does represent a file with an encoding (and is superclass to named File s), it seems more appropriate here than an ArrayBuffer which is a raw sequence of bytes.