AJAX Upload

// The Box Auth Header. Add your access token.
        var headers = { Authorization: 'Bearer @ViewBag.AccessToken'};
        var uploadUrl = 'https://upload.box.com/api/2.0/files/content';

        var files = fileSelect.files;
        var formData = new FormData();

        formData.append('files', files[0], files[0].name);

        // Add the destination folder for the upload to the form
        formData.append('parent_id', '0');

        $.ajax({
            url: uploadUrl,
            headers: headers,
            type: 'POST',
            // This prevents JQuery from trying to append the form as a querystring
            processData: false,
            contentType: false,
            data: formData
        }).complete(function ( data ) {
            uploadButton.innerHTML = 'Upload';
            // Log the JSON response to prove this worked
            console.log(data.responseText);
            location.reload(true);
        });