I'm trying to upload an image which is in base64 format using below code
upload: function(e) { 
      const tmpFiles = e.target.files;
      if (tmpFiles.length === 0) {
            return false;
      }
      const file = tmpFiles[0]; 
      const self = this;
      const reader = new FileReader();
      reader.onload = function(e) {
      self.form.imageData.push(e.target.result);
     }
}
issue is if i access this.form.imageData outside onload function then i get null and in my controller also i'm not getting image data, but when i print it using self.form.imageData inside onload function then i get image data in base64 encoded format.
Any help is highly appreciated.
 
    