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javascript - Bootstrap Multiselect - 通过onclick取消选择

问题描述

我正在使用Bootstrap-Multiselect功能；单击“x”时，我想取消选择一个选项。这是我正在寻找的一个简单示例。

$(document).on("click", '#remove', function(a) {
  var tag = this.getAttribute("value");

  $('#tags').find('[value=' + tag + ']').prop('selected', false);
});
<html>

<head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.7.5/css/bootstrap-select.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.7.5/js/bootstrap-select.min.js"></script>
</head>

<body>
  <div class="container">
    <h1>Bootstrap Select demo</h1>
    <select class="selectpicker" id='Tags' data-style="btn-primary" multiple data-max-options="2">
      <option value='Php' selected>PHP</option>
      <option>CSS</option>
      <option>HTML</option>
      <option>CSS 3</option>
      <option>Bootstrap</option>
      <option>JavaScript</option>
    </select>

    <div value='Php' id='remove'>x</div>
  </div>
</body>

</html>

标签： javascriptjquerytwitter-bootstrapselectmulti-select

解决方案

这可以通过取消选择所有然后获取所选值并从中删除目标标签并重新选择其余部分然后最后刷新选择来实现：

$(document).on("click", '#remove', function(a) {
  var tag = this.getAttribute("value");
  var values = $('#tags').val();
  
  if(values){
  $('#tags').selectpicker('deselectAll');
  $('#tags').selectpicker('val', values.filter(function(e) {return e !== tag }));
  $('#tags').selectpicker('refresh');
  }
});
<html>

<head>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.7.5/css/bootstrap-select.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.7.5/js/bootstrap-select.min.js"></script>
</head>

<body>
  <div class="container">
    <h1>Bootstrap Select demo</h1>
    <select class="selectpicker" id='tags' data-style="btn-primary" multiple data-max-options="2">
      <option value='Php' selected>PHP</option>
      <option>CSS</option>
      <option>HTML</option>
      <option>CSS 3</option>
      <option>Bootstrap</option>
      <option>JavaScript</option>
    </select>

    <div value='Php' id='remove'>x</div>
  </div>
</body>

</html>

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