jQuery easyUI datagrid 增加求和统计行的实现代码

<style type="text/css">    .subtotal { font-weight: bold; }/*合计单元格样式*/  </style>  <script type="text/javascript">    function onLoadSuccess() {      //添加“合计”列      $('#table').datagrid('appendRow', {        Saler: '<span class="subtotal">合计</span>',        TotalOrderCount: '<span class="subtotal">' + compute("TotalOrderCount") + '</span>',        TotalOrderMoney: '<span class="subtotal">' + compute("TotalOrderMoney") + '</span>',        TotalOrderScore: '<span class="subtotal">' + compute("TotalOrderScore") + '</span>',        TotalTrailCount: '<span class="subtotal">' + compute("TotalTrailCount") + '</span>',        Rate: '<span class="subtotal">' + ((compute("TotalOrderScore") / compute("TotalTrailCount")) * 100).toFixed(2) + '</span>'      });    }    //指定列求和    function compute(colName) {      var rows = $('#table').datagrid('getRows');      var total = 0;      for (var i = 0; i < rows.length; i++) {        total += parseFloat(rows[i][colName]);      }      return total;    }  </script>