单击 select 元素时 Bootstrap 4 下拉菜单自动折叠

Question

这是我在之后遇到的扩展问题。

问题在于当有人单击箭头以显示高级搜索时，它按预期下拉了表单。然而，当有人点击 select 下拉菜单时，整个下拉菜单会自行折叠。

我一直在努力找出 element/trigger 是什么导致了这个问题，看看是否有办法解决这个问题，但我一点进展都没有

这是我目前观察到的

[预期]如果用户在下拉菜单区域外单击，菜单会折叠
[意外]如果用户单击下拉菜单中的任何空格，菜单仍然折叠
[预期] 如果用户单击文本字段、复选框、单选框、文本区域，他们应该能够键入和输入所需的文本。
[意外] 如果用户单击 select 菜单，下拉菜单会立即折叠

我在下面放了一个示例代码来演示我的问题。

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
    <div class="container">
      <div class="row">
        <div class="col-12">
          <div class="input-group dropdown">
            <input type="text" class="form-control" id="project_search" placeholder="search ...">
            <div class="input-group-append">
              <div class="btn-group">
                <button class="btn bg-primary text-white" type="button">Search</button>
                <button class="btn bg-primary text-white dropdown-toggle dropdown-toggle-split" id="searchAdvancedFilter" data-toggle="dropdown" data-boundary="window" aria-haspopup="true" aria-expanded="false">
                  <span class="caret"></span>
                  <span class="sr-only">Toggle Dropdown</span>
                </button>
                <div class="dropdown-menu dropdown-menu-right p-3 w-100" aria-labelledby="searchAdvancedFilter">
                  <h6 class="dropdown-header">Advanced Settings</h6>
                  <div class="dropdown-divider"></div>
                  <div class="form-group">
                    <label for="option">Option Header</label>
                    <select class="form-control" id="option" name="option">
                      <option>Pick an option</option>
                      <option value=1>Option 1</option>
                      <option value=2>Option 2</option>
                    </select>
                  </div>
                  <div class="form-group">
                    <label for="inputtext">Input Header</label>
                    <input type="text" class="form-control" id="inputtext" name="inputtext">
                  </div>
                  <div class="form-group">
                    <label for="inputcb">Checkbox Header</label>
                    <input type="checkbox" class="form-control" id="inputcb" name="inputcb">
                  </div>
                  <div class="form-group">
                    <label for="inputradio">Radio Header</label>
                    <input type="radio" class="form-control" id="inputradio" name="inputradio">
                  </div>
                  <div class="form-group">
                    <label for="ta">TextArea Header</label>
                    <textarea class="form-control" id="ta" name="ta"></textarea>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>

Answer 1

Bootstrap 下拉菜单将始终在单击时关闭，除了使用 <form> 时。防止它在点击时关闭的方法是在下拉列表中使用 <form> 元素...

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<div class="container">
<div class="row">
    <div class="col-12">
        <div class="input-group dropdown">
            <input type="text" class="form-control" id="project_search" placeholder="search ...">
            <div class="input-group-append">
                <div class="btn-group">
                    <button class="btn bg-primary text-white" type="button">Search</button>
                    <button class="btn bg-primary text-white dropdown-toggle dropdown-toggle-split" id="searchAdvancedFilter" data-toggle="dropdown" data-boundary="window" aria-haspopup="true" aria-expanded="false">
                        <span class="caret"></span>
                        <span class="sr-only">Toggle Dropdown</span>
                    </button>
                    <div class="dropdown-menu dropdown-menu-right p-3 w-100" aria-labelledby="searchAdvancedFilter">
                        <h6 class="dropdown-header">Advanced Settings</h6>
                        <div class="dropdown-divider"></div>
                        <form>
                        <div class="form-group">
                            <label for="option">Option Header</label>
                            <select class="form-control" id="option" name="option">
                                <option>Pick an option</option>
                                <option value="1">Option 1</option>
                                <option value="2">Option 2</option>
                            </select>
                        </div>
                        <div class="form-group">
                            <label for="inputtext">Input Header</label>
                            <input type="text" class="form-control" id="inputtext" name="inputtext">
                        </div>
                        <div class="form-group">
                            <label for="inputcb">Checkbox Header</label>
                            <input type="checkbox" class="form-control" id="inputcb" name="inputcb">
                        </div>
                        <div class="form-group">
                            <label for="inputradio">Radio Header</label>
                            <input type="radio" class="form-control" id="inputradio" name="inputradio">
                        </div>
                        <div class="form-group">
                            <label for="ta">TextArea Header</label>
                            <textarea class="form-control" id="ta" name="ta"></textarea>
                        </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
</div>

https://www.codeply.com/go/18ACVL2uzn

另一种选择是使用 jQuery stopPropagation() 方法：https://www.codeply.com/go/4dVvDDpChW

$('.dropdown-menu').click(function(e) {
    e.stopPropagation();
});

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