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From: https://stackoverflow.com/questions/23150333/html5-javascript-dataurl-to-blob-blob-to-dataurl | |
//**dataURL to blob** | |
function dataURLtoBlob(dataurl) { | |
var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1], | |
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n); | |
while(n--){ | |
u8arr[n] = bstr.charCodeAt(n); | |
} | |
return new Blob([u8arr], {type:mime}); | |
} | |
//**blob to dataURL** | |
function blobToDataURL(blob, callback) { | |
var a = new FileReader(); | |
a.onload = function(e) {callback(e.target.result);} | |
a.readAsDataURL(blob); | |
} | |
//test: | |
var blob = dataURLtoBlob('data:text/plain;base64,YWFhYWFhYQ=='); | |
blobToDataURL(blob, function(dataurl){ | |
console.log(dataurl); | |
}); |
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