mysql查询使用javascript

Question

我有一个用于显示折线图的JavaScript。但是，我想要做的是从mysql数据库中提取图表数据

所以我改变了js以获得我的mysql和php变量但是现在当我执行打击代码并且不确定如何解决它时我得到500错误。

              <!-- Morris chart - Sales -->
          <div class="chart tab-pane active" id="revenue-chart" style="position: relative; height: 300px;"></div>

        </div>
        <script>
              /* Morris.js Charts */
              // Sales chart
             var area = new Morris.Area({
                element   : 'revenue-chart',
                resize    : true,
                data      : [
                <?php
                  $custservnumsql = mysqli_query($conn, "SELECT count(noteid) as noteid, monthname(date_written), YEAR(date_written) 
                                                 FROM customer_notes where is_staffreply is null
                                                 GROUP BY YEAR(date_written), MONTH(date_written) DESC");
                   while($custservnumrow = mysqli_fetch_array($custservnumsql)
                   {
                      extract($custservnumrow);
                ?>
                    { y: "<?php echo $date_written; ?> Q1", numrequests: <?php echo "$noteid; ?>}
                <?php   
                   }
                ?>
                ],
                xkey      : 'y',
                ykeys     : ['numrequests'],
                labels    : [Number Of Requests',],
                lineColors: ['#a0d0e0'],
                hideHover : 'auto'
              });

        </script>