javascript - GridPanel CheckboxSelectionModel - 所选总和

Question

如何对所有选定行的特定列求和？ (通过 JavaScript)

    <script>
        var sumCheck= function () {
            var resultSum;

          /* todo loop selectedrows
             resultSum += column(nvlparmvfin); */;

            alert(resultSum);
        };
    </script>

 <ext:GridPanel runat="server" ID="grid1" Height="250px" Frame="true" StoreID="dsGrid1">
                        <ColumnModel runat="server">
                            <Columns>
                                <ext:NumberColumn runat="server" DataIndex="nvlparmvfin" Format=",0.00" Align="Right"/>                             
                            </Columns>
                        </ColumnModel>
                        <SelectionModel>
                            <ext:CheckboxSelectionModel runat="server" Mode="Multi">
                                <Listeners>
                                    <SelectionChange Fn="sumCheck()" />
                                </Listeners> 
                            </ext:CheckboxSelectionModel>
                        </SelectionModel>                       
</ext:GridPanel>

如果您能帮助我，非常感谢；

Answer 1

您必须遍历所选记录的循环，然后存储特定列的值并将其放入计数中。

你的代码将类似于这样

var grd = this.up().up();
var gridSel = grd.getSelection();
var count = 0;
    for(var i=0; i<gridSel.length;i++){
        var num = gridSel[i].data.indexSum;
            num = parseInt(num);
            count += num;
      }
alert(count);

我为你创建了一个 fiddle 。请检查。

Fiddle