You can use ng-init
<select ng-model="mySelect" ng-change="showSelectValue(mySelect)" ng-init="mySelect = '36'" >
<option value="36">36</option>
<option value="37">37</option>
<option value="38">38</option>
<option value="39">39</option>
<option value="40">40</option>
</select>
Very Very Thank You!!!