scopes-ng-model-select-option

<!DOCTYPE html>
<html>

<head>
  <script data-require="angular.js@1.4.8" data-semver="1.4.8" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js"></script>
</head>

<body ng-app>
<select ng-init="selectOption = 'Happy'" ng-model="selectOption">
        <option value="Happy">Happy</option>
        <option value="Angry">Angry</option>
        <option value="Sad" selected>Sad</option>
    </select>
    You are "<span ng-bind="selectOption"></span>", not?. Please Select!
</body>

</html>

http://blog.allii.ir/2016/01/angularjs-begineer-intermediate-course-basics-part-one/#scopes