我有一个使用DataTables的程序，它当前显示所有数据条目的总计值，同时还显示每个类别的总计（在这种情况下按办公室）。我也想这样做，以便您可以看到每个办事处在总捐款中所占的百分比。我很难弄清楚如何遍历数组并获取值，以便可以正确计算它们。
$(document).ready(
function () {
$('#reportTable').DataTable(
{
dom: 'Blfript', // Blfrtip
buttons:
[
{
extend: 'pdf',
footer: true,
className: 'green glyphicon glyphicon-file',
title: 'Report',
filename: 'Report',
orientation: 'landscape',
pageSize: 'LEGAL',
exportOptions:
{
columns: [0, 1, 2, 3, 4, 5]
}
},
{
extend: 'excel',
footer: true,
className: 'green glyphicon glyphicon-list-alt',
title: 'Report',
filename: 'Report',
pageSize: 'LEGAL',
exportOptions:
{
columns: [0, 1, 2, 3, 4, 5]
}
},
{
extend: 'copy',
title: 'Report',
footer: true,
className: 'green glyphicon glyphicon-duplicate',
exportOptions:
{
columns: [0, 1, 2, 3, 4, 5]
}
},
{
extend: 'print',
footer: true,
className: 'green glyphicon glyphicon-print',
text: 'Print',
title: ' ',
autoPrint: true,
orientation: 'landscape',
pageSize: 'LEGAL',
exportOptions:
{
columns: [0, 1, 2, 3, 4, 5]
},
// Format exported footer (NOT WORKING)
customize: function (win)
{
var body = $(win.document.body).find('table tfoot');
$(body).append($(body).find('tr:eq(0)').clone());
var row = $(body).find('tr').last();
//$(row).find('th').text('NEW');
$(row).find('th:eq(7)').text('First column');
},
}
],
"footerCallback": function (row, start, end, display)
{
var api = this.api(),data;
// Remove the formatting to get integer data for summation
var intVal = function (i)
{
return typeof i === 'string' ?
i.replace(/[\$,]/g, '') * 1 :
typeof i === 'number' ?
i : 0;
};
// Total over all pages
total = api
.column(5)
.data()
.reduce(function (a, b)
{
return intVal(a) + intVal(b);
}, 0);
// Total over all filtered pages
if (api
.column(5,
{
search: 'applied'
})
.data()
.length)
{
pageTotal = api
.column(5,
{
search: 'applied'
})
.data()
.reduce(function (a, b)
{
return intVal(a) + intVal(b);
});
} else {
pageTotal = 0;
}
// Total by office
var office = api.column(2).data().sort().unique().toArray();
var totals = [];
for (var i = 0; i < office.length; i++) totals.push(0);
for (var j = 0; j < totals.length; j++) {
var temp = temp + parseFloat(totals[j]);
}
var percent = (temp / total) * 100;
api.rows({ filter: 'applied' }).every(function ()
{
var data = this.data();
totals[office.indexOf(data[2])] += intVal(data[5]);
});
// Remove any offices that have a "0" result
html = [];
for (var j = 0; j < office.length; j++) {
if (totals[j] > 0) html.push(office[j] + ': ' + totals[j].toFixed(2) + ' (' + percent + '%)');
}
// Update footer
$(api.column(5).footer()).html(html.length === 0 ? "" : html.join('</br>') + '</br>' + '$' + pageTotal.toFixed(2) + ' filtered total' + '</br>' + '$' + total.toFixed(2) + ' total');
},
});
}
);
$(document).ready
(
function ()
{
$.fn.dataTable.ext.search.push
(
function (settings, data, dataIndex)
{
var min = $('#min').datepicker("getDate");
var max = $('#max').datepicker("getDate");
var startDate = new Date(data[0]);
if (min === null && max === null) { return true; }
if (min === null && startDate <= max) { return true;}
if(max === null && startDate >= min) {return true;}
if (startDate <= max && startDate >= min) { return true; }
return false;
}
);
$("#min").datepicker({ onSelect: function () { table.draw(); }, changeMonth: true, changeYear: true });
$("#max").datepicker({ onSelect: function () { table.draw(); }, changeMonth: true, changeYear: true });
var table = $('#reportTable').DataTable();
// Event listener to the two range filtering inputs to redraw on input
$('#min, #max').change
(
function ()
{
table.draw();
}
);
}
);<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<head>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/r/dt/jszip-2.5.0,dt-1.10.9,b-1.0.3,b-flash-1.0.3,b-html5-1.0.3/datatables.min.css" />
<link rel="stylesheet" type="text/css" href="~/Content/dataTables.bootstrap.css" />
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<script type="text/javascript" src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script type="text/javascript" src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.5.2/js/dataTables.buttons.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.5.2/js/buttons.html5.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/1.5.2/js/buttons.print.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.3/jszip.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/pdfmake.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/vfs_fonts.js"></script>
</head>
<table border="0" cellspacing="5" cellpadding="5">
<tbody>
<tr>
<td style="margin: 10px; padding: 5px;">Start Date:</td>
<td><input name="min" id="min" type="text"></td>
</tr>
<tr>
<td style="margin: 10px; padding: 5px;">End Date:</td>
<td><input name="max" id="max" type="text"></td>
</tr>
</tbody>
</table>
<table width="100%" class="display" id="reportTable" cellspacing="0">
<thead>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</thead>
<tfoot>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</tfoot>
<tbody>
<tr>
<td>Tiger Nixon</td>
<td>System Architect</td>
<td>Edinburgh</td>
<td>61</td>
<td>2011/04/25</td>
<td>$320,800</td>
</tr>
<tr>
<td>Garrett Winters</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>63</td>
<td>2011/07/25</td>
<td>$170,750</td>
</tr>
<tr>
<td>Ashton Cox</td>
<td>Junior Technical Author</td>
<td>San Francisco</td>
<td>66</td>
<td>2009/01/12</td>
<td>$86,000</td>
</tr>
<tr>
<td>Cedric Kelly</td>
<td>Senior Javascript Developer</td>
<td>Edinburgh</td>
<td>22</td>
<td>2012/03/29</td>
<td>$433,060</td>
</tr>
<tr>
<td>Airi Satou</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>33</td>
<td>2008/11/28</td>
<td>$162,700</td>
</tr>
<tr>
<td>Brielle Williamson</td>
<td>Integration Specialist</td>
<td>New York</td>
<td>61</td>
<td>2012/12/02</td>
<td>$372,000</td>
</tr>
<tr>
<td>Herrod Chandler</td>
<td>Sales Assistant</td>
<td>San Francisco</td>
<td>59</td>
<td>2012/08/06</td>
<td>$137,500</td>
</tr>
<tr>
<td>Rhona Davidson</td>
<td>Integration Specialist</td>
<td>Tokyo</td>
<td>55</td>
<td>2010/10/14</td>
<td>$327,900</td>
</tr>
<tr>
<td>Colleen Hurst</td>
<td>Javascript Developer</td>
<td>San Francisco</td>
<td>39</td>
<td>2009/09/15</td>
<td>$205,500</td>
</tr>
<tr>
<td>Sonya Frost</td>
<td>Software Engineer</td>
<td>Edinburgh</td>
<td>23</td>
<td>2008/12/13</td>
<td>$103,600</td>
</tr>
<tr>
<td>Jena Gaines</td>
<td>Office Manager</td>
<td>London</td>
<td>30</td>
<td>2008/12/19</td>
<td>$90,560</td>
</tr>
<tr>
<td>Quinn Flynn</td>
<td>Support Lead</td>
<td>Edinburgh</td>
<td>22</td>
<td>2013/03/03</td>
<td>$342,000</td>
</tr>
<tr>
<td>Charde Marshall</td>
<td>Regional Director</td>
<td>San Francisco</td>
<td>36</td>
<td>2008/10/16</td>
<td>$470,600</td>
</tr>
<tr>
<td>Haley Kennedy</td>
<td>Senior Marketing Designer</td>
<td>London</td>
<td>43</td>
<td>2012/12/18</td>
<td>$313,500</td>
</tr>
<tr>
<td>Tatyana Fitzpatrick</td>
<td>Regional Director</td>
<td>London</td>
<td>19</td>
<td>2010/03/17</td>
<td>$385,750</td>
</tr>
<tr>
<td>Michael Silva</td>
<td>Marketing Designer</td>
<td>London</td>
<td>66</td>
<td>2012/11/27</td>
<td>$198,500</td>
</tr>
<tr>
<td>Paul Byrd</td>
<td>Chief Financial Officer (CFO)</td>
<td>New York</td>
<td>64</td>
<td>2010/06/09</td>
<td>$725,000</td>
</tr>
<tr>
<td>Gloria Little</td>
<td>Systems Administrator</td>
<td>New York</td>
<td>59</td>
<td>2009/04/10</td>
<td>$237,500</td>
</tr>
<tr>
<td>Bradley Greer</td>
<td>Software Engineer</td>
<td>London</td>
<td>41</td>
<td>2012/10/13</td>
<td>$132,000</td>
</tr>
<tr>
<td>Dai Rios</td>
<td>Personnel Lead</td>
<td>Edinburgh</td>
<td>35</td>
<td>2012/09/26</td>
<td>$217,500</td>
</tr>
<tr>
<td>Jenette Caldwell</td>
<td>Development Lead</td>
<td>New York</td>
<td>30</td>
<td>2011/09/03</td>
<td>$345,000</td>
</tr>
<tr>
<td>Yuri Berry</td>
<td>Chief Marketing Officer (CMO)</td>
<td>New York</td>
<td>40</td>
<td>2009/06/25</td>
<td>$675,000</td>
</tr>
<tr>
<td>Caesar Vance</td>
<td>Pre-Sales Support</td>
<td>New York</td>
<td>21</td>
<td>2011/12/12</td>
<td>$106,450</td>
</tr>
<tr>
<td>Doris Wilder</td>
<td>Sales Assistant</td>
<td>Sidney</td>
<td>23</td>
<td>2010/09/20</td>
<td>$85,600</td>
</tr>
<tr>
<td>Angelica Ramos</td>
<td>Chief Executive Officer (CEO)</td>
<td>London</td>
<td>47</td>
<td>2009/10/09</td>
<td>$1,200,000</td>
</tr>
<tr>
<td>Gavin Joyce</td>
<td>Developer</td>
<td>Edinburgh</td>
<td>42</td>
<td>2010/12/22</td>
<td>$92,575</td>
</tr>
<tr>
<td>Jennifer Chang</td>
<td>Regional Director</td>
<td>Singapore</td>
<td>28</td>
<td>2010/11/14</td>
<td>$357,650</td>
</tr>
<tr>
<td>Brenden Wagner</td>
<td>Software Engineer</td>
<td>San Francisco</td>
<td>28</td>
<td>2011/06/07</td>
<td>$206,850</td>
</tr>
<tr>
<td>Fiona Green</td>
<td>Chief Operating Officer (COO)</td>
<td>San Francisco</td>
<td>48</td>
<td>2010/03/11</td>
<td>$850,000</td>
</tr>
<tr>
<td>Shou Itou</td>
<td>Regional Marketing</td>
<td>Tokyo</td>
<td>20</td>
<td>2011/08/14</td>
<td>$163,000</td>
</tr>
<tr>
<td>Michelle House</td>
<td>Integration Specialist</td>
<td>Sidney</td>
<td>37</td>
<td>2011/06/02</td>
<td>$95,400</td>
</tr>
<tr>
<td>Suki Burks</td>
<td>Developer</td>
<td>London</td>
<td>53</td>
<td>2009/10/22</td>
<td>$114,500</td>
</tr>
<tr>
<td>Prescott Bartlett</td>
<td>Technical Author</td>
<td>London</td>
<td>27</td>
<td>2011/05/07</td>
<td>$145,000</td>
</tr>
<tr>
<td>Gavin Cortez</td>
<td>Team Leader</td>
<td>San Francisco</td>
<td>22</td>
<td>2008/10/26</td>
<td>$235,500</td>
</tr>
<tr>
<td>Martena Mccray</td>
<td>Post-Sales support</td>
<td>Edinburgh</td>
<td>46</td>
<td>2011/03/09</td>
<td>$324,050</td>
</tr>
<tr>
<td>Unity Butler</td>
<td>Marketing Designer</td>
<td>San Francisco</td>
<td>47</td>
<td>2009/12/09</td>
<td>$85,675</td>
</tr>
<tr>
<td>Howard Hatfield</td>
<td>Office Manager</td>
<td>San Francisco</td>
<td>51</td>
<td>2008/12/16</td>
<td>$164,500</td>
</tr>
<tr>
<td>Hope Fuentes</td>
<td>Secretary</td>
<td>San Francisco</td>
<td>41</td>
<td>2010/02/12</td>
<td>$109,850</td>
</tr>
<tr>
<td>Vivian Harrell</td>
<td>Financial Controller</td>
<td>San Francisco</td>
<td>62</td>
<td>2009/02/14</td>
<td>$452,500</td>
</tr>
<tr>
<td>Timothy Mooney</td>
<td>Office Manager</td>
<td>London</td>
<td>37</td>
<td>2008/12/11</td>
<td>$136,200</td>
</tr>
<tr>
<td>Jackson Bradshaw</td>
<td>Director</td>
<td>New York</td>
<td>65</td>
<td>2008/09/26</td>
<td>$645,750</td>
</tr>
<tr>
<td>Olivia Liang</td>
<td>Support Engineer</td>
<td>Singapore</td>
<td>64</td>
<td>2011/02/03</td>
<td>$234,500</td>
</tr>
<tr>
<td>Bruno Nash</td>
<td>Software Engineer</td>
<td>London</td>
<td>38</td>
<td>2011/05/03</td>
<td>$163,500</td>
</tr>
<tr>
<td>Sakura Yamamoto</td>
<td>Support Engineer</td>
<td>Tokyo</td>
<td>37</td>
<td>2009/08/19</td>
<td>$139,575</td>
</tr>
<tr>
<td>Thor Walton</td>
<td>Developer</td>
<td>New York</td>
<td>61</td>
<td>2013/08/11</td>
<td>$98,540</td>
</tr>
<tr>
<td>Finn Camacho</td>
<td>Support Engineer</td>
<td>San Francisco</td>
<td>47</td>
<td>2009/07/07</td>
<td>$87,500</td>
</tr>
<tr>
<td>Serge Baldwin</td>
<td>Data Coordinator</td>
<td>Singapore</td>
<td>64</td>
<td>2012/04/09</td>
<td>$138,575</td>
</tr>
<tr>
<td>Zenaida Frank</td>
<td>Software Engineer</td>
<td>New York</td>
<td>63</td>
<td>2010/01/04</td>
<td>$125,250</td>
</tr>
<tr>
<td>Zorita Serrano</td>
<td>Software Engineer</td>
<td>San Francisco</td>
<td>56</td>
<td>2012/06/01</td>
<td>$115,000</td>
</tr>
<tr>
<td>Jennifer Acosta</td>
<td>Junior Javascript Developer</td>
<td>Edinburgh</td>
<td>43</td>
<td>2013/02/01</td>
<td>$75,650</td>
</tr>
<tr>
<td>Cara Stevens</td>
<td>Sales Assistant</td>
<td>New York</td>
<td>46</td>
<td>2011/12/06</td>
<td>$145,600</td>
</tr>
<tr>
<td>Hermione Butler</td>
<td>Regional Director</td>
<td>London</td>
<td>47</td>
<td>2011/03/21</td>
<td>$356,250</td>
</tr>
<tr>
<td>Lael Greer</td>
<td>Systems Administrator</td>
<td>London</td>
<td>21</td>
<td>2009/02/27</td>
<td>$103,500</td>
</tr>
<tr>
<td>Jonas Alexander</td>
<td>Developer</td>
<td>San Francisco</td>
<td>30</td>
<td>2010/07/14</td>
<td>$86,500</td>
</tr>
<tr>
<td>Shad Decker</td>
<td>Regional Director</td>
<td>Edinburgh</td>
<td>51</td>
<td>2008/11/13</td>
<td>$183,000</td>
</tr>
<tr>
<td>Michael Bruce</td>
<td>Javascript Developer</td>
<td>Singapore</td>
<td>29</td>
<td>2011/06/27</td>
<td>$183,000</td>
</tr>
<tr>
<td>Donna Snider</td>
<td>Customer Support</td>
<td>New York</td>
<td>27</td>
<td>2011/01/25</td>
<td>$112,000</td>
</tr>
</tbody>
</table>
<script type="text/javascript" src="~/Scripts/total.js"></script>
<script type="text/javascript" src="~/Scripts/daterange.js"></script>
答案 0 :(得分：1)
我今天在玩这个游戏，因为我需要分散自己的注意力，想出这个，它不能满足您的所有需求，但是距离并不远：
$(document).ready(
function () {
$('#reportTable').DataTable({
"footerCallback": function (row, start, end, display){
const intVal = i => typeof i === 'string' ? parseInt(i.replace(/[\$,]/g, ''), 10) : typeof i === 'number' ? i : 0,
api = this.api(),
obj = {
total: api.column(5).data().reduce((a, b) => a + intVal(b), 0),
offices: []
};
api.column(2).data().sort().unique().toArray().forEach(office => {
obj.offices.push({
office,
total: 0
});
});
api.rows().every(a => {
let d = api.row(a).data()
obj.offices.find(x => x.office === d[2]).total += intVal(d[5]);
});
const footer = [`Grand total: ${numeral(obj.total).format('$0,0.00')}`];
obj.offices.forEach(o => {
footer.push(`<strong>${o.office}</strong>: ${numeral(o.total).format('$0,0.00')} (${((o.total * 100) / obj.total).toFixed(2)}%)`)
});
$(api.column(5).footer()).html(footer.join("<br>"));
},
});
}
);
希望helps一点...