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Re: Testing for blob

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"Evertjan." <exxjxw.hannivoort@inter.nl.net> wrote on 07 Jul 2020 in 
comp.lang.javascript:

> 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.

Or make an "instant" Blob:

var f = new Blob()
console.log(f, f instanceof Blob); // Blob true




-- 
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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