SO-20192186

HTML

<select id="testID" multiple="multiple">
    <option value="1">test Value1</option>
    <option value="2">test Value2</option>
    <option value="3">test Value3</option>
    <option value="4">test Value4</option>
    <option value="5">test Value5</option>
    <option value="6">test Value6</option>
</select>
<input type="button" value="Get dropdown selected Value" id="select-values">
    <div id="result"></div>

JavaScript

$('#testID').change(function () {
        var test=$(this).find("option:selected").map(function () {
        return $(this).text();
    }).get().join('//');
     alert(test);
            });