$("#add").on( 'click', function() {
        var word_add = $('<div id="word-'+words+'" class="word">');
        $(word_add).append('<input type="text" class="words" name="words[]"  id="words-'+words+'" placeholder="sana" required/>');
        $(word_add).append('<input type="number" class="middles" name="middles[]"  id="middles-'+words+'" min="1" max="1" value="1" required/>');
        $(word_add).append('<input type="text" class="clues" name="clues[]"  id="clues-'+words+'" placeholder="vihje" required/>');