如何在选中的表格中设置复选框？

Question

我有一张表，我有一个要设置为选中的复选框的id，但我不能这样做，我不知道为什么。

我尝试了这个，但没有任何反应，而且我没有任何类型的错误消息：

$('#medicalListTable input.type_checkbox[id="sindicate-345"]').prop('checked', true);
$('input.type_checkbox[id="sindicate-345"]').prop('checked', true);
$('input.type_checkbox[id="sindicate-345"]').attr('checked', true);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="medicalListTable" class="display responsive nowrap dataTable no-footer" cellspacing="0" width="100%" role="grid" aria-describedby="medicalListTable_info" style="width: 100%;">
  <thead>
    <tr role="row">
      <th class="sorting ui-state-default sorting_asc" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-sort="ascending" aria-label="Id empleado: activate to sort column descending" style="width: 134px;">
        <div class="DataTables_sort_wrapper">Id empleado<span class="DataTables_sort_icon css_right ui-icon ui-icon-triangle-1-n"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Nombre: activate to sort column ascending" style="width: 174px;">
        <div class="DataTables_sort_wrapper">Nombre<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Apellidos: activate to sort column ascending" style="width: 329px;">
        <div class="DataTables_sort_wrapper">Apellidos<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Seleccionar: activate to sort column ascending" style="width: 125px;">
        <div class="DataTables_sort_wrapper">Seleccionar<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
    </tr>
  </thead>
  <tbody>
    <tr role="row" class="odd">
      <td class="vehicleId sorting_1">345</td>
      <td class="model">NAME</td>
      <td class="model">SURNAME</td>
      <td>
        <input type="checkbox" id="sindicate-345">
      </td>
    </tr>
  </tbody>
</table>

Answer 1

元素上没有type_checkbox 类。我想你的意思是使用这样的属性选择器：

$('#medicalListTable input[type="checkbox"][id="sindicate-345"]').prop('checked', true);

但是，如果您在元素上有一个id，它在 DOM 中应该是唯一的，因此这是您需要使用的唯一选择器：

$('#sindicate-345').prop('checked', true);

$('#sindicate-345').prop('checked', true);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="medicalListTable" class="display responsive nowrap dataTable no-footer" cellspacing="0" width="100%" role="grid" aria-describedby="medicalListTable_info" style="width: 100%;">
  <thead>
    <tr role="row">
      <th class="sorting ui-state-default sorting_asc" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-sort="ascending" aria-label="Id empleado: activate to sort column descending" style="width: 134px;">
        <div class="DataTables_sort_wrapper">Id empleado<span class="DataTables_sort_icon css_right ui-icon ui-icon-triangle-1-n"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Nombre: activate to sort column ascending" style="width: 174px;">
        <div class="DataTables_sort_wrapper">Nombre<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Apellidos: activate to sort column ascending" style="width: 329px;">
        <div class="DataTables_sort_wrapper">Apellidos<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Seleccionar: activate to sort column ascending" style="width: 125px;">
        <div class="DataTables_sort_wrapper">Seleccionar<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
    </tr>
  </thead>
  <tbody>
    <tr role="row" class="odd">
      <td class="vehicleId sorting_1">345</td>
      <td class="model">NAME</td>
      <td class="model">SURNAME</td>
      <td>
        <input type="checkbox" id="sindicate-345">
      </td>
    </tr>
  </tbody>
</table>

Answer 2

由于属性 id 在文档中是唯一的，您可以简单地使用它：

$('#sindicate-345').attr('checked', true);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="medicalListTable" class="display responsive nowrap dataTable no-footer" cellspacing="0" width="100%" role="grid" aria-describedby="medicalListTable_info" style="width: 100%;">
<thead>
    <tr role="row">
        <th class="sorting ui-state-default sorting_asc" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-sort="ascending" aria-label="Id empleado: activate to sort column descending" style="width: 134px;">
            <div class="DataTables_sort_wrapper">Id empleado<span class="DataTables_sort_icon css_right ui-icon ui-icon-triangle-1-n"></span></div>
        </th>
        <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Nombre: activate to sort column ascending" style="width: 174px;">
            <div class="DataTables_sort_wrapper">Nombre<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
        </th>
        <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Apellidos: activate to sort column ascending" style="width: 329px;">
            <div class="DataTables_sort_wrapper">Apellidos<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
        </th>
        <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Seleccionar: activate to sort column ascending" style="width: 125px;">
            <div class="DataTables_sort_wrapper">Seleccionar<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
        </th>
    </tr>
</thead>
<tbody>
    <tr role="row" class="odd">
        <td class="vehicleId sorting_1">345</td>
        <td class="model">NAME</td>
        <td class="model">SURNAME</td>
        <td>
            <input type="checkbox" id="sindicate-345">
        </td>
    </tr>        
</tbody>
</table>

Answer 3

你可以通过

$('#sindicate-345').attr('Checked','Checked');

$('#sindicate-345').attr('Checked','Checked');

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <table id="medicalListTable" class="display responsive nowrap dataTable no-footer" cellspacing="0" width="100%" role="grid" aria-describedby="medicalListTable_info" style="width: 100%;">
      <thead>
        <tr role="row">
          <th class="sorting ui-state-default sorting_asc" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-sort="ascending" aria-label="Id empleado: activate to sort column descending" style="width: 134px;">
            <div class="DataTables_sort_wrapper">Id empleado<span class="DataTables_sort_icon css_right ui-icon ui-icon-triangle-1-n"></span></div>
          </th>
          <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Nombre: activate to sort column ascending" style="width: 174px;">
            <div class="DataTables_sort_wrapper">Nombre<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
          </th>
          <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Apellidos: activate to sort column ascending" style="width: 329px;">
            <div class="DataTables_sort_wrapper">Apellidos<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
          </th>
          <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Seleccionar: activate to sort column ascending" style="width: 125px;">
            <div class="DataTables_sort_wrapper">Seleccionar<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
          </th>
        </tr>
      </thead>
      <tbody>
        <tr role="row" class="odd">
          <td class="vehicleId sorting_1">345</td>
          <td class="model">NAME</td>
          <td class="model">SURNAME</td>
          <td>
            <input type="checkbox" id="sindicate-345">
          </td>
        </tr>
      </tbody>
    </table>

或

$("#sindicate-345").prop("checked", true);

$("#sindicate-345").prop("checked", true);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="medicalListTable" class="display responsive nowrap dataTable no-footer" cellspacing="0" width="100%" role="grid" aria-describedby="medicalListTable_info" style="width: 100%;">
  <thead>
    <tr role="row">
      <th class="sorting ui-state-default sorting_asc" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-sort="ascending" aria-label="Id empleado: activate to sort column descending" style="width: 134px;">
        <div class="DataTables_sort_wrapper">Id empleado<span class="DataTables_sort_icon css_right ui-icon ui-icon-triangle-1-n"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Nombre: activate to sort column ascending" style="width: 174px;">
        <div class="DataTables_sort_wrapper">Nombre<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Apellidos: activate to sort column ascending" style="width: 329px;">
        <div class="DataTables_sort_wrapper">Apellidos<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
      <th class="sorting ui-state-default" tabindex="0" aria-controls="medicalListTable" rowspan="1" colspan="1" aria-label="Seleccionar: activate to sort column ascending" style="width: 125px;">
        <div class="DataTables_sort_wrapper">Seleccionar<span class="DataTables_sort_icon css_right ui-icon ui-icon-caret-2-n-s"></span></div>
      </th>
    </tr>
  </thead>
  <tbody>
    <tr role="row" class="odd">
      <td class="vehicleId sorting_1">345</td>
      <td class="model">NAME</td>
      <td class="model">SURNAME</td>
      <td>
        <input type="checkbox" id="sindicate-345">
      </td>
    </tr>
  </tbody>
</table>