AngularJS ng-options ng-change ng-model ng-selected ng-init

<select 
    ng-model="productSelected" 
    ng-options="rsProduct.price for rsProduct in lsProduct" 
    ng-change="changeProduct()" data-valid="required"> 
    <option value="" ng-selected="selected">Seleccione ...</option>                                   
</select>

Otro

<select 
    ng-init="productSelected=''"
    ng-model="productSelected" 
    ng-options="rsProduct.price for rsProduct in lsProduct" 
    ng-change="changeProduct()" data-valid="required"> 
    <option value="0" ng-selected="selected">Seleccione ...</option>                                   
</select>

ArquitecturaIBM Consulting