SO - 30048879
by Arun P Johny
HTML
<select name="zoom_cat[]" style="margin-left:15px;" id="contact_country">
<option value="" selected="selected">Nothing</option>
<option value="0">Singam</option>
<option value="0">Singam2</option>
<option value="1">Karadi</option>
<option value="2">Poonai</option>
<option value="3">Yaanai</option>
</select>
JavaScript
var myText = "Singam";
$("#contact_country option:contains('" + myText + "')").prop("selected", true);