How to check if an object is of type Blob?

Question

Is it possible to check if an object is of type Blob in JavaScript?

I'm getting the following error:

TypeError: Argument 1 of FileReader.readAsDataURL does not implement interface Blob.

take a look at https://stackoverflow.com/questions/20727750/how-to-check-if-a-variable-is-a-blob-in-javascript — Luca Kiebel, May 27 '17 at 18:17
Thanks. None of the similar search results came up today or I would have seen it was already answered. :) — 1.21 gigawatts, May 27 '17 at 18:30

score 4 · Accepted Answer · answered May 27 '17 at 18:16

4

using instanceof blob you can check.

var MyBlob = new Blob(['content'], {type : 'text/plain'});
console.log(MyBlob instanceof Blob) // true

answered May 27 '17 at 18:16

Dinesh undefined

1 Answers1