Convert blob to base64

Question

This is a snippet for the code that I want to do Blob to Base64 string:

This commented part works and that when the URL generated by this i

Answer 1

 var reader = new FileReader();
 reader.readAsDataURL(blob); 
 reader.onloadend = function() {
     var base64data = reader.result;                
     console.log(base64data);
 }

Form the docs readAsDataURL encodes to base64