How to upload base64 encoded image data to S3 using JavaScript only?

Question

I have a rails app on Heroku (cedar env). It has a page where I render the canvas data into an image using toDataURL() method. I\'m trying to upload the returned ba

Answer 1

If anyone cares: here is the coffescript version of the function given above!

  convertToBlob = (base64) ->
    binary = atob base64.split(',')[1]
    array = []
    for i in [0...binary.length]
      array.push binary.charCodeAt i
    new Blob [new Uint8Array array], {type: 'image/jpeg'}