我试图在DataTables中实现footerCallback,它根据同一行中不同列中的单元格计算每列的条件和。这是我的设置演示:https://jsfiddle.net/rantoun/552y9j90/13/
HTML:
<table id="table1">
<thead>
<tr>
<th>Fruit</th>
<th>sumCondition</th>
<th># Eaten</th>
<th># Remaining</th>
</tr>
</thead>
<tfoot>
<tr>
<th></th>
<th align="center">Count</th>
<th align="left"></th>
<th align="left"></th>
</tr>
</tfoot>
<tbody>
<tr>
<td>Apples</td>
<td>Use</td>
<td>3</td>
<td>8</td>
</tr>
<tr>
<td>Oranges</td>
<td>Use</td>
<td>6</td>
<td>5</td>
</tr>
<tr>
<td>Bananas</td>
<td>Ignore</td>
<td>2</td>
<td>9</td>
</tr>
</tbody>
</table>
jQuery的:
$("#table1").DataTable({
"paging": false,
"searching": false,
"info": false,
"footerCallback": function ( row, data, start, end, display ) {
var columns = [2, 3];
var api = this.api();
_.each(columns, function(idx) {
var total = api
.column(idx)
.data()
.reduce(function (a, b) {
return parseInt(a) + parseInt(b);
}, 0)
$('tr:eq(0) th:eq('+idx+')', api.table().footer()).html(total);
})
}
});
具体来说,我的目标是footerCallback只对“&#34;忽略&#34;不在条件列中。希望这是明确的,任何帮助表示赞赏。
答案 0 :(得分:0)
我通过获取reduce函数中求和值的当前索引来解决此问题,然后使用索引访问条件单元格中的相应值。下面是新的jQuery代码:
$("#table1").DataTable({
"paging": false,
"searching": false,
"info": false,
"footerCallback": function ( row, data, start, end, display ) {
var columns = [2, 3];
//console.log(data);
var api = this.api();
// Get sumCondition and put in array
_.each(columns, function(idx) {
var total = api
.column(idx)
.data()
.reduce(function (a, b) {
// Find index of current value for accessing sumCondition value in same row
var cur_index = api.column(idx).data().indexOf(b);
if (api.column(1).data()[cur_index] != "Ignore") {
return parseInt(a) + parseInt(b);
}
else { return parseInt(a); }
}, 0)
$('tr:eq(0) th:eq('+idx+')', api.table().footer()).html(total);
})
} });