跟踪特定Select2下拉项目上的点击

时间:2018-09-21 15:44:49

标签: javascript jquery css jquery-select2

我正在进行A / B测试,对于变化的版本,我想跟踪Select2下拉选项上的点击。

此特定选项是动态添加的,我认为这使事情变得复杂(我也在更改下拉菜单的占位符,但我认为这不会使事情变得混乱)。

在我的AB /测试平台上,我只能真正跟踪特定选择器的点击,因此,我试图找出可以选择该选项寄存器的任何方式。

很遗憾,我无法更改任何标记本身,但可以使用JavaScript/JQ

通常,如果我正在编写脚本,我只会从Select2中检索选定的项目,但是在这种情况下,我只能使用可以跟踪点击的实际选择器。

我正在使用事件监听器来模拟和测试CSS选择器(JS代码的底部),但是没有运气。

$(document).ready(function() {
    $('#dropdown').select2({
    	placeholder: "Old Placeholder",
      minimumResultsForSearch: -1
    });

     var newOption = {
        id: "01",
        text: 'Dynamically Added Option',
        value: "01"
     };
    
    var newOption = new Option(newOption.text, newOption.id, false, false);
    $('#dropdown').append(newOption);
    
    
   $('#dropdown').trigger('change.select2');
   
   $('.select2-selection__placeholder').html('New Placeholder'); 
   
   /******* HERE'S WHERE I'M TESTING SELECTORS FOR WHEN "DYNAMICALLY ADDED OPTION" IS SELECTED *******/
   
   // track select2 list item with an id containing the new option's id
   $('.select2-results__option[id*="01"]').on('click', function(){
   		alert("this never happens");
   });
   
   $('option[value="01"]').on('click', function(){
   		alert("this also never happens");
   });
   
});
select {
  width: 200px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.5/js/select2.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.5/css/select2.min.css" rel="stylesheet"/>

<select id="dropdown">
  <option></option>
  <option value="1">option 1</option>
  <option value="2">option 2</option>
  <option value="3">option 3</option>
</select>

1 个答案:

答案 0 :(得分:0)

您可以为select添加更改事件,并对新元素进行小测试,例如:

$('#dropdown').on('change', function() {
    if ($(this).val() === '01') {
      console.log('The new option selected');
    }
});

$(document).ready(function() {
  $('#dropdown').select2({
    placeholder: "Old Placeholder",
    minimumResultsForSearch: -1
  });

  var newOption = {
    id: "01",
    text: 'Dynamically Added Option',
    value: "01"
  };

  var newOption = new Option(newOption.text, newOption.id, false, false);

  $('#dropdown').append(newOption);
  $('#dropdown').trigger('change.select2');
  $('.select2-selection__placeholder').html('New Placeholder');


  // track select2 list item with an id containing the new option's id
  $('#dropdown').on('change', function() {
    if ($(this).val() === '01') {
      console.log('The new option selected');
    }
  });
});
select {
  width: 200px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.5/js/select2.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.5/css/select2.min.css" rel="stylesheet" />

<select id="dropdown">
  <option></option>
  <option value="1">option 1</option>
  <option value="2">option 2</option>
  <option value="3">option 3</option>
</select>