jquery - selected-select 显示组标签和选项选择

Question

我选择了使用 optdorup 和相同选项进行选择，我想在所选选择中显示 optgroup 标签和所选选项。请检查我的代码并提出更改建议。 检查这个 fiddle

http://jsfiddle.net/x5q95a11

$(".chosen-select").chosen();

$(".chosen-select").on('change', function (event,el) {
  var selected_element = $(".chosen-select option:contains("+el.selected+")");
  
  var selected_value  = selected_element.val();
  var parent_optgroup = selected_element.closest('optgroup').attr('label');
  
  selected_element.text(parent_optgroup+' - '+selected_value).trigger("chosen:updated");
});

 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://harvesthq.github.io/chosen/chosen.jquery.js"></script>

<select data-placeholder="Your Favorite Football Team" class="chosen-select" tabindex="5">
          <option value=""></option>
          <optgroup label="NFC EAST">
            <option value="Dallas Cowboy">Dallas Cowboys</option>
            <option value="New York">New York Giants</option>
            <option value="Philadelphia">Philadelphia Eagles</option>
            <option value="Washington">Washington Redskins</option>
          <optgroup>
          <optgroup label="NFC NORTH">
            <option value="Dallas Cowboy">Dallas Cowboys</option>
            <option value="New York">New York Giants</option>
            <option value="Philadelphia">Philadelphia Eagles</option>
            <option value="Washington">Washington Redskins</option>
          </optgroup>
          
        </select>

Answer 1

尝试插件提供的选项。 http://jsfiddle.net/kajalc/n1cnc53c/

$(".chosen-select").chosen({include_group_label_in_selected:true});