onSelect File Filtering

Use the onSelect callback to inspect, filter, or reject files before they enter the queue.

(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,
        autoUpload: false,
        onSelect: function(files, uploader) {
            log('Selected ' + files.length + ' file(s)');
            var filtered = files.filter(function(f) { return f.size < 5 * 1024 * 1024; });
            if (filtered.length < files.length) log('Filtered out ' + (files.length - filtered.length) + ' file(s) over 5MB');
            return filtered;
        }
    });
})();