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Re: Testing for blob

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Andrew Poulos <ap_prog@hotmail.com> wrote on 07 Jul 2020 in 
comp.lang.javascript:

> I have a function
> 
> function upload(f) {
>    ...
>}
> 
> if within the function I add
> 
> console.log(f, f instanceof Blob);
> 
> I get
> 
> Blob {size: 16231, type: "audio/mpeg-3"} false
> 
> I don't understand how f can be a blob but not be an instance of Blob.
> 
> At any rate the deeper problem I have is to be able to distinguish 
> whether f is a blob (from new Blob) or a file (from an input of 
> type="file").
> 
> Andrew Poulos

Could be a timing problem, in the sense of "notjet a blob".

So try again later, with a timeout or an onclick.


-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Testing for blob Andrew Poulos <ap_prog@hotmail.com> - 2020-07-07 18:37 +1000
  Re: Testing for blob "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-07 11:33 +0200
    Re: Testing for blob "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-07 11:48 +0200
  Re: Testing for blob Julio Di Egidio <julio@diegidio.name> - 2020-07-07 23:44 -0700
    Re: Testing for blob Julio Di Egidio <julio@diegidio.name> - 2020-07-07 23:48 -0700
    Re: Testing for blob Andrew Poulos <ap_prog@hotmail.com> - 2020-07-08 17:42 +1000

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