(function() {
    var uploader = new MultipleUpload('#demo', {
        uploadUrl: '/api/upload',
        multiple: true,
        concurrency: 2
    });
    function update() {
        var s = uploader.getStats();
        document.getElementById('st-total').textContent = s.total;
        document.getElementById('st-pending').textContent = s.pending;
        document.getElementById('st-uploading').textContent = s.uploading;
        document.getElementById('st-completed').textContent = s.completed;
        document.getElementById('st-failed').textContent = s.failed;
        document.getElementById('st-bytes').textContent = MultipleUpload.formatSize(s.uploadedBytes) + ' / ' + MultipleUpload.formatSize(s.totalBytes);
    }
    uploader.on('taskProgress', update);
    uploader.on('taskComplete', update);
    uploader.on('taskError', update);
    uploader.on('fileAdded', update);
})();