Created
September 5, 2017 22:12
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Javascript: convert base64 to blob
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| function dataURItoBlob(dataURI, callback) { | |
| // convert base64 to raw binary data held in a string | |
| // doesn't handle URLEncoded DataURIs | |
| var byteString = atob(dataURI.split(',')[1]); | |
| // separate out the mime component | |
| var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0] | |
| // write the bytes of the string to an ArrayBuffer | |
| var ab = new ArrayBuffer(byteString.length); | |
| var ia = new Uint8Array(ab); | |
| for (var i = 0; i < byteString.length; i++) { | |
| ia[i] = byteString.charCodeAt(i); | |
| } | |
| // write the ArrayBuffer to a blob, and you're done | |
| var bb = new Blob([ab]); | |
| return bb; | |
| } |
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