Works with any backend npm install Zero dependencies
onQueueComplete Callback

Fires once when all uploads in the queue are finished.

(function() {
    var logEl = document.getElementById('log');
    function log(m) { var d = document.createElement('div'); d.className='pkg-log-entry'; d.textContent=m; logEl.appendChild(d); logEl.scrollTop=logEl.scrollHeight; }
    new MultipleUpload('#demo', {
        uploadUrl: '/api/upload',
        multiple: true,
        onFileAdded: function(t) { log('Queued: ' + t.fileName); },
        onQueueComplete: function(files) {
            log('=== ALL DONE: ' + files.length + ' file(s) uploaded ===');
        }
    });
})();