我在页脚中有最后一列（总计）摘要的简单数据表：
HTML：
<table id="example" class="display" cellspacing="0" width="100%">
<thead>
<tr>
<th>First name</th>
<th>Last name</th>
<th>Position</th>
<th>Office</th>
<th>Salary</th>
</tr>
</thead>
<tfoot>
<tr>
<th colspan="4" style="text-align:right">Total:</th>
<th></th>
</tr>
</tfoot>
<tbody>
<tr>
<td>Tiger</td>
<td>Nixon</td>
<td>System Architect</td>
<td>Edinburgh</td>
<td>$320,800</td>
</tr>
<tr>
<td>Garrett</td>
<td>Winters</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>$170,750</td>
</tr>
<tr>
<td>Ashton</td>
<td>Cox</td>
<td>Junior Technical Author</td>
<td>San Francisco</td>
<td>$86,000</td>
</tr>
<tr>
<td>Cedric</td>
<td>Kelly</td>
<td>Senior Javascript Developer</td>
<td>Edinburgh</td>
<td>$433,060</td>
</tr>
<tr>
<td>Airi</td>
<td>Satou</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>$162,700</td>
</tr>
<tr>
<td>Brielle</td>
<td>Williamson</td>
<td>Integration Specialist</td>
<td>New York</td>
<td>$372,000</td>
</tr>
<tr>
<td>Herrod</td>
<td>Chandler</td>
<td>Sales Assistant</td>
<td>San Francisco</td>
<td>$137,500</td>
</tr>
<tr>
<td>Rhona</td>
<td>Davidson</td>
<td>Integration Specialist</td>
<td>Tokyo</td>
<td>$327,900</td>
</tr>
<tr>
<td>Colleen</td>
<td>Hurst</td>
<td>Javascript Developer</td>
<td>San Francisco</td>
<td>$205,500</td>
</tr>
<tr>
<td>Sonya</td>
<td>Frost</td>
<td>Software Engineer</td>
<td>Edinburgh</td>
<td>$103,600</td>
</tr>
<tr>
<td>Jena</td>
<td>Gaines</td>
<td>Office Manager</td>
<td>London</td>
<td>$90,560</td>
</tr>
<tr>
<td>Quinn</td>
<td>Flynn</td>
<td>Support Lead</td>
<td>Edinburgh</td>
<td>$342,000</td>
</tr>
<tr>
<td>Charde</td>
<td>Marshall</td>
<td>Regional Director</td>
<td>San Francisco</td>
<td>$470,600</td>
</tr>
<tr>
<td>Haley</td>
<td>Kennedy</td>
<td>Senior Marketing Designer</td>
<td>London</td>
<td>$313,500</td>
</tr>
<tr>
<td>Tatyana</td>
<td>Fitzpatrick</td>
<td>Regional Director</td>
<td>London</td>
<td>$385,750</td>
</tr>
<tr>
<td>Michael</td>
<td>Silva</td>
<td>Marketing Designer</td>
<td>London</td>
<td>$198,500</td>
</tr>
<tr>
<td>Paul</td>
<td>Byrd</td>
<td>Chief Financial Officer (CFO)</td>
<td>New York</td>
<td>$725,000</td>
</tr>
<tr>
<td>Gloria</td>
<td>Little</td>
<td>Systems Administrator</td>
<td>New York</td>
<td>$237,500</td>
</tr>
<tr>
<td>Bradley</td>
<td>Greer</td>
<td>Software Engineer</td>
<td>London</td>
<td>$132,000</td>
</tr>
<tr>
<td>Dai</td>
<td>Rios</td>
<td>Personnel Lead</td>
<td>Edinburgh</td>
<td>$217,500</td>
</tr>
<tr>
<td>Jenette</td>
<td>Caldwell</td>
<td>Development Lead</td>
<td>New York</td>
<td>$345,000</td>
</tr>
<tr>
<td>Yuri</td>
<td>Berry</td>
<td>Chief Marketing Officer (CMO)</td>
<td>New York</td>
<td>$675,000</td>
</tr>
<tr>
<td>Caesar</td>
<td>Vance</td>
<td>Pre-Sales Support</td>
<td>New York</td>
<td>$106,450</td>
</tr>
<tr>
<td>Doris</td>
<td>Wilder</td>
<td>Sales Assistant</td>
<td>Sidney</td>
<td>$85,600</td>
</tr>
<tr>
<td>Angelica</td>
<td>Ramos</td>
<td>Chief Executive Officer (CEO)</td>
<td>London</td>
<td>$1,200,000</td>
</tr>
<tr>
<td>Gavin</td>
<td>Joyce</td>
<td>Developer</td>
<td>Edinburgh</td>
<td>$92,575</td>
</tr>
<tr>
<td>Jennifer</td>
<td>Chang</td>
<td>Regional Director</td>
<td>Singapore</td>
<td>$357,650</td>
</tr>
<tr>
<td>Brenden</td>
<td>Wagner</td>
<td>Software Engineer</td>
<td>San Francisco</td>
<td>$206,850</td>
</tr>
<tr>
<td>Fiona</td>
<td>Green</td>
<td>Chief Operating Officer (COO)</td>
<td>San Francisco</td>
<td>$850,000</td>
</tr>
<tr>
<td>Shou</td>
<td>Itou</td>
<td>Regional Marketing</td>
<td>Tokyo</td>
<td>$163,000</td>
</tr>
<tr>
<td>Michelle</td>
<td>House</td>
<td>Integration Specialist</td>
<td>Sidney</td>
<td>$95,400</td>
</tr>
<tr>
<td>Suki</td>
<td>Burks</td>
<td>Developer</td>
<td>London</td>
<td>$114,500</td>
</tr>
<tr>
<td>Prescott</td>
<td>Bartlett</td>
<td>Technical Author</td>
<td>London</td>
<td>$145,000</td>
</tr>
<tr>
<td>Gavin</td>
<td>Cortez</td>
<td>Team Leader</td>
<td>San Francisco</td>
<td>$235,500</td>
</tr>
<tr>
<td>Martena</td>
<td>Mccray</td>
<td>Post-Sales support</td>
<td>Edinburgh</td>
<td>$324,050</td>
</tr>
<tr>
<td>Unity</td>
<td>Butler</td>
<td>Marketing Designer</td>
<td>San Francisco</td>
<td>$85,675</td>
</tr>
<tr>
<td>Howard</td>
<td>Hatfield</td>
<td>Office Manager</td>
<td>San Francisco</td>
<td>$164,500</td>
</tr>
<tr>
<td>Hope</td>
<td>Fuentes</td>
<td>Secretary</td>
<td>San Francisco</td>
<td>$109,850</td>
</tr>
<tr>
<td>Vivian</td>
<td>Harrell</td>
<td>Financial Controller</td>
<td>San Francisco</td>
<td>$452,500</td>
</tr>
<tr>
<td>Timothy</td>
<td>Mooney</td>
<td>Office Manager</td>
<td>London</td>
<td>$136,200</td>
</tr>
<tr>
<td>Jackson</td>
<td>Bradshaw</td>
<td>Director</td>
<td>New York</td>
<td>$645,750</td>
</tr>
<tr>
<td>Olivia</td>
<td>Liang</td>
<td>Support Engineer</td>
<td>Singapore</td>
<td>$234,500</td>
</tr>
<tr>
<td>Bruno</td>
<td>Nash</td>
<td>Software Engineer</td>
<td>London</td>
<td>$163,500</td>
</tr>
<tr>
<td>Sakura</td>
<td>Yamamoto</td>
<td>Support Engineer</td>
<td>Tokyo</td>
<td>$139,575</td>
</tr>
<tr>
<td>Thor</td>
<td>Walton</td>
<td>Developer</td>
<td>New York</td>
<td>$98,540</td>
</tr>
<tr>
<td>Finn</td>
<td>Camacho</td>
<td>Support Engineer</td>
<td>San Francisco</td>
<td>$87,500</td>
</tr>
<tr>
<td>Serge</td>
<td>Baldwin</td>
<td>Data Coordinator</td>
<td>Singapore</td>
<td>$138,575</td>
</tr>
<tr>
<td>Zenaida</td>
<td>Frank</td>
<td>Software Engineer</td>
<td>New York</td>
<td>$125,250</td>
</tr>
<tr>
<td>Zorita</td>
<td>Serrano</td>
<td>Software Engineer</td>
<td>San Francisco</td>
<td>$115,000</td>
</tr>
<tr>
<td>Jennifer</td>
<td>Acosta</td>
<td>Junior Javascript Developer</td>
<td>Edinburgh</td>
<td>$75,650</td>
</tr>
<tr>
<td>Cara</td>
<td>Stevens</td>
<td>Sales Assistant</td>
<td>New York</td>
<td>$145,600</td>
</tr>
<tr>
<td>Hermione</td>
<td>Butler</td>
<td>Regional Director</td>
<td>London</td>
<td>$356,250</td>
</tr>
<tr>
<td>Lael</td>
<td>Greer</td>
<td>Systems Administrator</td>
<td>London</td>
<td>$103,500</td>
</tr>
<tr>
<td>Jonas</td>
<td>Alexander</td>
<td>Developer</td>
<td>San Francisco</td>
<td>$86,500</td>
</tr>
<tr>
<td>Shad</td>
<td>Decker</td>
<td>Regional Director</td>
<td>Edinburgh</td>
<td>$183,000</td>
</tr>
<tr>
<td>Michael</td>
<td>Bruce</td>
<td>Javascript Developer</td>
<td>Singapore</td>
<td>$183,000</td>
</tr>
<tr>
<td>Donna</td>
<td>Snider</td>
<td>Customer Support</td>
<td>New York</td>
<td>$112,000</td>
</tr>
</tbody>
</table>
的javascript：
$(document).ready(function() {
$('#example').DataTable( {
"footerCallback": function ( row, data, 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( 4 )
.data()
.reduce( function (a, b) {
return intVal(a) + intVal(b);
}, 0 );
// Update footer
$( api.column( 4 ).footer() ).html(
'$'+ total +' total'
);
}
} );
} );
https://jsfiddle.net/sLxbznx6/
我希望更新搜索关键字的总数。
任何人都可以给我任何暗示吗？ ：）
非常感谢：）
答案 0 :(得分：3)
使用selector-modifier { search: 'applied' }作为column() API方法的第二个参数。
变化：
total = api
.column(4)
.data()
.reduce( function (a, b) {
return intVal(a) + intVal(b);
}, 0 );
到
total = api
.column( 4, { search: 'applied' } )
.data()
.reduce( function (a, b) {
return intVal(a) + intVal(b);
}, 0 );
请参阅updated jsFiddle以获取代码和演示。