SO - 15195227
by Arun P Johny
HTML
<select id="mymenu">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
JavaScript
$('#mymenu option[value="5"]').prop('selected', true)