jQuery - Get multiple selected items from list

gistfile1.js

<select name="garden" multiple="multiple">
 
    <option>Flowers</option>
    <option selected="selected">Shrubs</option>
    <option>Trees</option>
    <option selected="selected">Bushes</option>
 
    <option>Grass</option>
    <option>Dirt</option>
</select>

<script>
 
    $("select").change(function () {
          var str = "";
          $("select option:selected").each(function () {
                str += $(this).text() + " ";
              });
          $("div").text(str);
        })
        .trigger('change');
</script>