<!-- Dropdown --> <script> $(function() { $('.ui.dropdown') .dropdown() ; }); </script> <!-- compare Items --> <script> var cBIds = [ <?php $data = ""; $qualities = $qualityApi->getQualityIds(); foreach ($qualities->qualities as $quality) { $data .= "\"cB_" . $quality->id . "\","; } echo substr($data, 0, -1); ?> ]; console.log(<?php echo substr($data, 0, -1); ?> ); function compare() { var i, len = cBIds.length, count = 0; var params = ""; for( i = 0; i < len; i++) { if(document.getElementById(cBIds[i]).checked == true) {