점수 평균내는 script 소스 조언 구합니다

<div class="review-modal-stars">
            <div class="review-modal-star--2" id="star_1"></div>
        </div>


        <div class="review-modal-stars">
            <div class="review-modal-star--2" id="star_2"></div>
        </div>


        <div class="review-modal-stars">
            <div class="review-modal-star--2" id="star_3"></div>
        </div>


        <div class="review-modal-stars">
            <div class="review-modal-star--2" id="star_4"></div>
        </div>


        <div class="review-modal-stars">
            <div class="review-modal-star--2" id="star_5"></div>
        </div>

<script>
    $(document).ready(function(){
        $('.review-modal-star--2').raty({
           number: 5,
           score: 5,
           halfShow: false,
           half: false,
           space: false,
           starOff: '/home/img/star_off.png',
           starOn: '/home/img/star_on.png',
           click: function(score, evt) { //callback
               var totalScore = 0;
               $('.review-modal-star--2 input').each(function(i,e){
                   totalScore += Number(e.value);
               });
               var resultScore = totalScore / 5;
               $('#score').html(resultScore);
               $("#wr_1").val(resultScore);
           }
        });
    })
</script>