Everything worked fine until I tried to add routing. I read that Angularjs version 1.2+ requires 'ngRoute' as an dependency (I am using version 1.2.16). I added it but it still doesn't work. Below are my codes.
test.html (Main Page)
<html ng-app="demoApp">
<head>
    <title></title>
</head>
<body>
    <p>Front Page</p>
    <div ng-view></div>
    <script src="angular.min.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.16/angular-route.js"></script>
    <script src="testjs.js"></script>
</body>
</html> 
testjs.js
demoApp = angular.module('demoApp',['ngRoute']);
demoApp.config(function ($routeProvider) {
    $routeProvider.when('/', {
        controller: 'SimpleController',
        templateUrl: '/partials/first.html'
    });
});
var controllers = {};
controllers.SimpleController = function ($scope){
    $scope.first = "Info";
    $scope.customers=[
        {name:'jerry',city:'chicago'},
        {name:'tom',city:'houston'},
        {name:'enslo',city:'taipei'}
    ];
};
demoApp.controller(controllers);
first.html
<div>
    <input type="text" ng-model="name"/>
    </br>
    {{first}}
    </br> 
    <ul>
        <li ng-repeat="cust in customers | filter:name">{{cust.name | uppercase}} - {{cust.city}}</li>
    </ul>   
</div>
 
     
    