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Get Audio as blob once loaded

resle
1#
resle Published in 2018-02-14 06:48:51Z
var audio = new Audio(); 

audio.onloadeddata = 
function()
{
 // get as blob
}

audio.src = "http://somewebsite/somefile.mp3";

Is it possible to get an Audio element's data as a blob once it's been loaded?

I am aware I can load a file as a blob, and then assign it to an Audio element's source, but this is not what I am trying to achieve: the load-and-assign method can't leverage the built-in capability of audio element to play "as soon as possible" (see onCanPlaythrough event).

(Secondary question: do browsers usually cache audio files, if/once they are completely loaded, just as they do with images?)

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