Convert data Uri to blob

dataToBlob.js

function dataUrItoBlob(dataUri) {
            var binary = atob(dataUri.split(',')[1]);
            var mimeString = dataUri.split(',')[0].split(':')[1].split(';')[0];
            var array = [];
            for (var i = 0; i < binary.length; i++) {
                array.push(binary.charCodeAt(i));
            }
            return new Blob([new Uint8Array(array)], { type: mimeString });
        };