问“数据”选中“全部”复选框

EN

<table id="example" class="display" style="width:100%">
    <thead>
        <tr>
            <th>
                <button style="border: none; background: transparent; font-size: 14px;" id="MyTableCheckAllButton">
                <i class="far fa-square"></i>  
                </button>
            </th>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Salary</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td></td>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
            <td>$320,800</td>
        </tr>
        <tr>
            <td></td>
            <td>Garrett Winters</td>
            <td>Accountant</td>
            <td>Tokyo</td>
            <td>63</td>
            <td>$170,750</td>
        </tr>
        <tr>
            <td></td>
            <td>Ashton Cox</td>
            <td>Junior Technical Author</td>
            <td>San Francisco</td>
            <td>66</td>
            <td>$86,000</td>
        </tr>
        <tr>
            <td></td>
            <td>Cedric Kelly</td>
            <td>Senior Javascript Developer</td>
            <td>Edinburgh</td>
            <td>22</td>
            <td>$433,060</td>
        </tr>
        <tr>
            <td></td>
            <td>Airi Satou</td>
            <td>Accountant</td>
            <td>Tokyo</td>
            <td>33</td>
            <td>$162,700</td>
        </tr>
        <tr>
            <td></td>
            <td>Brielle Williamson</td>
            <td>Integration Specialist</td>
            <td>New York</td>
            <td>61</td>
            <td>$372,000</td>
        </tr>
        <tr>
            <td></td>
            <td>Herrod Chandler</td>
            <td>Sales Assistant</td>
            <td>San Francisco</td>
            <td>59</td>
            <td>$137,500</td>
        </tr>
        <tr>
            <td></td>
            <td>Rhona Davidson</td>
            <td>Integration Specialist</td>
            <td>Tokyo</td>
            <td>55</td>
            <td>$327,900</td>
        </tr>
        <tr>
            <td></td>
            <td>Colleen Hurst</td>
            <td>Javascript Developer</td>
            <td>San Francisco</td>
            <td>39</td>
            <td>$205,500</td>
        </tr>
        <tr>
            <td></td>
            <td>Sonya Frost</td>
            <td>Software Engineer</td>
            <td>Edinburgh</td>
            <td>23</td>
            <td>$103,600</td>
        </tr>
        <tr>
            <td></td>
            <td>Jena Gaines</td>
            <td>Office Manager</td>
            <td>London</td>
            <td>30</td>
            <td>$90,560</td>
        </tr>
    </tbody>
    <tfoot>
        <tr>
            <th></th>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Salary</th>
        </tr>
    </tfoot>
</table>

$(document).ready(function() {
    let myTable = $('#example').DataTable({
        columnDefs: [{
            orderable: false,
            className: 'select-checkbox',
            targets: 0,
        }],
        select: {
            style: 'os', // 'single', 'multi', 'os', 'multi+shift'
            selector: 'td:first-child',
        },
        order: [
            [1, 'asc'],
        ],
    });

    $('#MyTableCheckAllButton').click(function() {
        if (myTable.rows({
                selected: true
            }).count() > 0) {
            myTable.rows().deselect();
            return;
        }

        myTable.rows().select();
    });

    myTable.on('select deselect', function(e, dt, type, indexes) {
        if (type === 'row') {
            // We may use dt instead of myTable to have the freshest data.
            if (dt.rows().count() === dt.rows({
                    selected: true
                }).count()) {
                // Deselect all items button.
                $('#MyTableCheckAllButton i').attr('class', 'far fa-check-square');
                return;
            }

            if (dt.rows({
                    selected: true
                }).count() === 0) {
                // Select all items button.
                $('#MyTableCheckAllButton i').attr('class', 'far fa-square');
                return;
            }

            // Deselect some items button.
            $('#MyTableCheckAllButton i').attr('class', 'far fa-minus-square');
        }
    });
});