如何使用 jQuery 在下拉列表 select 中添加按鈕

Question

我正在使用jQuery DataTables 。 在表尾，我在每一列上添加了bootstrap-select來過濾數據。

我想在 select 下拉列表中添加一個按鈕“清除過濾器”，如下所示：

按鈕的 position 沒關系，可以在搜索框下方，也可以在末尾...

因此，包裝搜索框的div有一個 class .bs-searchbox所以我所做的是：在當前列中找到帶有 class 的div ，然后在里面找到 append 我的按鈕。

var button = column.find('.bs-searchbox');
$('<button type="button" class="btn btn-sm btn-light">Clear filter</button>').appendTo(button); 

jQuery 無法將.find識別為 function。 請在下面找到我的代碼的詳細說明。

你能告訴我我做錯了什么嗎？ 非常感謝。

 $(document).ready(function() { var table = $('#example').DataTable({ searching: false, info: false, paging: false, initComplete: function() { // loop through each colum in my datatable this.api().columns().every(function() { var column = this; //append bootstrap selectpicker (multiple) on footer of current colum var select = $('<select class="form-control show-tick" data-container="body" data-header="Select option(s)" data-actions-box="true" data-live-search="true" title="All" data-selected-text-format="count > 0" multiple></select>').appendTo($(column.footer()).empty()); //get unique values of each column and append as options column.data().unique().sort().each(function(d, j) { select.append('<option value="' + d + '">' + d + '</option>'); }); //add button 'clear filter' inside the select after search box /* var button = column.find('.bs-searchbox'); $('<button type="button" class="btn btn-sm btn-light">Clear filter</button>').appendTo(button); */ }); //apply bootstrap selectpicker $("select").selectpicker(); } }); });

 <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.css" rel="stylesheet"> <link href="https://cdn.datatables.net/1.10.21/css/dataTables.bootstrap4.min.css" rel="stylesheet"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.13.17/css/bootstrap-select.min.css"> <script src="https://code.jquery.com/jquery-3.5.1.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.1/umd/popper.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/js/bootstrap.min.js"></script> <script src="https://cdn.datatables.net/1.10.21/js/jquery.dataTables.min.js"></script> <script src="https://cdn.datatables.net/1.10.21/js/dataTables.bootstrap4.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.13.17/js/bootstrap-select.min.js"></script> <table id="example" class="table table-bordered table-hover nowrap" style="width:100%"> <thead> <tr> <th>Name</th> <th>Position</th> <th>Office</th> </tr> </thead> <tbody> <tr> <td>Ashton Cox</td> <td>Junior Technical Author</td> <td>San Francisco</td> </tr> <tr> <td>Cedric Kelly</td> <td>Senior Javascript Developer</td> <td>Edinburgh</td> </tr> <tr> <td>Airi Satou</td> <td>Accountant</td> <td>Tokyo</td> </tr> </tbody> <tfoot> <tr> <th>Name</th> <th>Position</th> <th>Office</th> </tr> </tfoot> </table>

Answer 1

嘗試在$("select").selectpicker();之后添加按鈕

請參見下面的代碼。

$(document).ready(function() {

  var table = $('#example').DataTable({
    searching: false,
    info: false,
    paging: false,

    initComplete: function() {
      // loop through each colum in my datatable          
      this.api().columns().every(function() {

        var column = this;
        //append bootstrap selectpicker (multiple) on footer of current colum 
        var select = $('<select class="form-control show-tick" data-container="body" data-header="Select option(s)" data-actions-box="true" data-live-search="true" title="All" data-selected-text-format="count > 0" multiple></select>')
          .appendTo($(column.footer()).empty());

        //get unique values of each column and append as options
        column.data().unique().sort().each(function(d, j) {
          select.append('<option value="' + d + '">' + d + '</option>');
        });

      });

      //apply bootstrap selectpicker
      $("select").selectpicker();
      
      var button = $('.bs-searchbox');
         $('<button type="button" class="btn btn-sm btn-light">Clear filter</button>').appendTo(button); 
        

    }
  });
});