Uncaught TypeError: Failed to execute 'readAsDataURL' on 'FileReader': parameter 1 is not of type 'Blob'

Question

I\'ve got a problem with a javascript Filereader which returns the error Uncaught TypeError: Failed to execute \'readAsDataURL\' on \'FileReader\': parameter 1 is not of type \'

Answer 1

You have to trigger change event on input field. then you will receive file.

$('#upload-button').click(function(){
    $('#my-custom-design-upload').trigger('change');                 
       return false;
    });