dual list box

by Joe

by Joe

HTML

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.4.1.js" integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU=" crossorigin="anonymous"></script>

<div class="selectContainer" id="bankTab">
  <select multiple="multiple" name="bankList" id="firstData">
    <option name="opt1" value="AB">Allahabad Bank</option>
    <option name="opt2" value="AN">Andhra Bank</option>
    <option name="opt3" value="BI">Bank of India</option>
    <option name="opt4" name="opt3" value="BB">Bank of Baroda</option>
  </select>
</div>

JavaScript

(function($) {

  function refresh_select($select) {

    // Clear columns
    $select.wrapper.selected.html('');
    $select.wrapper.non_selected.html('');

    // Get search value
    if ($select.wrapper.search) {
      var query = $select.wrapper.search.val();
    }

    var options = [];

    // Find all select options
    $select.find('option').each(function() {
      var $option = $(this);

      var value = $option.prop('value');
      var label = $option.text();
      var selected = $option.is(':selected');

      options.push({
        value: value,
        label: label,
        selected: selected,
        element: $option,
      });
    });

    // Loop over select options and add to the non-selected and selected columns
    options.forEach(function(option) {
      var $row = $('<a tabindex="0" role="button" class="item"></a>').text(option.label).data('value', option.value);

      // Create clone of row and add to the selected column
      if (option.selected) {
        $row.addClass('selected');
        var $clone = $row.clone();

        // Add click handler to mark row as non-selected
        $clone.click(function() {
          option.element.prop('selected', false);
          $select.change();
        });

        // Add key handler to mark row as selected and make the control accessible
        $clone.keypress(function() {
          if (event.keyCode === 32 || event.keyCode === 13) {
            // Prevent the default action to stop scrolling when space is pressed
            event.preventDefault();
            option.element.prop('selected', false);
            $select.change();
          }
        });

        $select.wrapper.selected.append($clone);
      }

      // Add click handler to mark row as selected
      $row.click(function() {
        option.element.prop('selected', 'selected');
        $select.change();
      });

      // Add key handler to mark row as selected and make the control accessible
      $row.keypress(function() {
      ...