<html>
<body>
<div ng-app="" ng-controller="personController">
名: <input type="text" ng-model="person.firstName"><br>
姓: <input type="text" ng-model="person.lastName"><br>
<br>
姓名: {{person.firstName + " " + person.lastName}}
</div>
<script src="/demo/personController.js"></script>
<script src="https://libs.baidu.com/angular.js/1.2.5/angular.min.js"></script>
</body>
</html>