Sometimes the Select2 placeholder fails to show up consistently

After setting a placeholder for my select2 autocomplete, I noticed that when I move my cursor away from the input field, the placeholder disappears. However, I would like it to always remain visible. Below is the code I am using, and I hope to find a way to fix this issue correctly.

$(function(){

      $("#select2-single-box").select2({
        placeholder: "Type a country",
        templateResult: addUserPic,
        templateSelection: addUserPic,
        minimumInputLength: 2,
        allowClear: true,

      }).on('select2:select', function (e) {
          $(this).val([]).trigger('change');
          $(this).val([e.params.data.id]).trigger("change");
      });

      function addUserPic(opt) {
        if (!opt.id) {
          return opt.text;
        }
        var optimage = $(opt.element).data('image');
        if (!optimage) {
          return opt.text;
        } else {
          var $opt = $(
            '<span class="userName"><img src="' + optimage + '" class="userPic" /> ' + $(opt.element).text() + '</span>'
          );
          return $opt;
        }
      };

    });
    
.select2-results__message{
      display:none;
    }

    .form-group {
      padding: 25px;
    }
    select {
      width: 45%;
      padding: 12px;
      cursor: text;
      border: 1px solid #aaa;
    }

    /* Other CSS rules */

    
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet"/>

    <div class="form-group">
    <select class="form-control" id="select2-single-box" onChange="window.document.location.href=this.options[this.selectedIndex].value;">
    <option></option>
    <option value="http://www.google.com" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Belgium-Flag-icon.png">Belgium</option>
    
    <!-- More options -->

    </select>
    </div>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>

Answer №1

$(function(){

  $("#select2-single-box").select2({
  placeholder : "Enter a country",
 templateResult: addFlag,
 templateSelection: addFlag,
    minimumInputLength: 2,
   allowClear:true
  }).on('select2:select', function (e) {
    $(this).val([]).trigger('change');
    $(this).val([e.params.data.id]).trigger("change");
  }).on('select2:open', function(e){
     $('.select2-search__field').attr('placeholder','Type a country');
  });

  function addFlag (opt) {
    if (!opt.id) {
      return opt.text;
    }               
    var flag = $(opt.element).data('image'); 
    if(!flag){
      return opt.text;
    } else {
      var $opt = $(
        '<span class="countryFlag"><img src="' + flag + '" class="flagImg" /> ' + $(opt.element).text() + '</span>'
      );
      return $opt;
    }
  };
});
.select2-results__message{
  display:none;
}

.form-group {
  padding: 25px;
}
select{
  width:45%;
  padding:12px;
  cursor:text;
  border:1px solid #aaa;
}

.select2-container--open .select2-selection {
    box-shadow: none!important;
}

.select2-container--open .select2-selection .select2-selection__arrow {
    z-index: 9999; /* example */
  display:none;
}

.select2-dropdown {

  
  /* margin-top: -@input-height-base; */
  margin-top: -34px!important;
}

.select2-dropdown .select2-search {
    padding: 0;
}
.select2-selection__arrow{
  display:none;
}
.select2-dropdown .select2-search .select2-search__field {

  
  /* padding: @padding-base-vertical @padding-base-horizontal; */
  padding: 6px 12px;
  
  /* height: calc(@input-height-base - 1px); */
  height: 36px;
}

.select2-container--default .select2-selection--single .select2-selection__clear{
  display:none;
}
.select2-container--open .select2-dropdown--below{
  border:0px solid transparent;
}
.select2-container--default .select2-selection--single{
  border-radius:0;
  height:34px;
  cursor:text;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>

<div class="form-group">
 <select class="form-control" id="select2-single-box" onChange="window.document.location.href=this.options[this.selectedIndex].value;" >
    <option></option>
    <option value="http://www.google.com" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Belgium-Flag-icon.png">Belgium</option>
    <option value="http://www.yahoo.com" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Canada-Flag-icon.png">Canada</option>
    <option value="http://www.bing.com" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Hong-Kong-Flag-icon.png">Hong Kong</option>
    <option value="http://www.yandex.com" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Aruba-icon.png">Aruba</option>
    <option value="http://www.php.net" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Montenegro-Flag-icon.png">Montenegro</option>
    <option value="http://www.asp.net" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Denmark-Flag-icon.png">Denmark</option>
    <option value="http://www.microsoft.net" data-image="http://icons.iconarchive.com/icons/custom-icon-design/all-country-flag/16/Guadeloupe-icon.png" >Guadeloupe</option>
    <option value="http://www.microsoft.net" data-image="http://icons.iconarchive.com/icons/icons-land/vista-flags/16/United-States-Flag-1-icon.png">United-States ABD</option>
  </select>
</div>

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