如何使用 jquery 在 div 中显示多选值？

Question

我希望能够使用 jquery 显示从多选到空 div 的值。 例如，在下面的代码中，我将如何使用 jquery 实现它？

<select multiple data-style="bg-white rounded-pill px-4 py-3 shadow-sm" class="selectnumber w-100 multiple searchable='Search here..'">
  <option>23</option>
  <option>17</option>
  <option>14</option>
  <option>11</option>
  <option>9</option>
</select>

<div class="numberselected">
  numbers selected should display here...
</div>

Answer 1

你可以在下面做一些事情

$(document).on('change', '.selectnumber', function(e){

var selected =   $('.selectnumber').val();
$('.numberselected').text(selected);


//console.log(selected);
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select multiple data-style="bg-white rounded-pill px-4 py-3 shadow-sm"
                        class="selectnumber w-100 multiple searchable='Search here..'">
                        <option>23</option>
                        <option>17</option>
                        <option>14</option>
                        <option>11</option>
                        <option>9</option>
                    </select><!-- End -->
                    <div class="numberselected">
                         //numbers selected should display here. 
                    </div>

Answer 2

使用jQuerychange 事件。

$(document).ready(function(){
  $("#multi").change(function(){
    $("#numberselected").text($("#multi").val())
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<select multiple data-style="bg-white rounded-pill px-4 py-3 shadow-sm"
    id="multi" class="selectnumber w-100 multiple searchable='Search here..'">
    <option>23</option>
    <option>17</option>
    <option>14</option>
    <option>11</option>
    <option>9</option>
</select>
<div class="numberselected" id="numberselected">
    numbers selected should display here...
</div>

Answer 3

请使用 jQuery 我希望下面的代码可以解决您的问题。如果它不起作用，请告诉我。

  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <select multiple data-style="bg-white rounded-pill px-4 py-3 shadow-sm" class="selectnumber w-100 multiple searchable='Search here..'" id="multi-select">
    <option value="23">23</option>
    <option value="17">17</option>
    <option value="14">14</option>
    <option value="11">11</option>
    <option value="9">9</option>
  </select><!-- End -->
  <div class="numberselected"> 
   //numbers selected should display 
  </div>

<script>
$(document).ready(function() {
  $("#multi-select")
    .change(function() {
      var str = "";
      $("#multi-select option:selected").each(function() {
        str += $(this).text() + " ";
      });
      $(".numberselected").text(str);
    })
    .change();
});
</script>

Answer 4

使用 JQ：

   $(document).ready(function(){
    $('#test').on('change', function() {
      console.log( $(this).val() );
    });
    });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!-- begin snippet: js hide: false console: true babel: null -->

        <select id ="test" multiple data-style="bg-white rounded-pill px-4 py-3 shadow-sm" class="selectnumber w-100 multiple searchable='Search here..'">
          <option>23</option>
          <option>17</option>
          <option>14</option>
          <option>11</option>
          <option>9</option>
        </select>

Answer 5

您没有选项值，所以我将显示 2 个变体。

$('#my-select').change(function(){
  //Get selected options
  let selectedOptions = $(this).children('option:selected');
  
  //Get text of selected options
  let textValues = selectedOptions
    .map(function(){return $(this).text()})
    .toArray();
    
  //Get values of selected options
  let valValues = selectedOptions
    .map(function(){return $(this).val()})
    .toArray();
    
  //Show them in divs
  $('#show-by-text').html(textValues.join(','));
  $('#show-by-value').html(valValues.join(','));
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select multiple id="my-select">
  <option value="1">one</option>
  <option value="2">two</option>
  <option value="3">three</option>
</select>
<br>
By text:
<div id="show-by-text">
</div>
By value:
<div id="show-by-value">
</div>