angularjs - 如何使用 AngularJS 设置页面标题

Question

我使用以下代码来显示每个 AngularJS 应用程序模板的页面标题，但每当我尝试输入无效的 URL 来测试 .otherwise 时，我都会收到以下错误:

TypeError: Cannot read property 'title' of undefined
    at http://localhost/app/js/app.js:34:43

下面是使用的app.js、index.html代码:

app.js:

var myApp = angular.module('myApp', ['ngRoute', 'ngSanitize']);
myApp.config(['$routeProvider', function($routeProvider) {

       $routeProvider.when('/home', 
                {     templateUrl: 'templates/index.html', 
                      controller: 'MainController',
                      title: 'Welcome to Home Page'
                });
        $routeProvider.otherwise({
                                    redirectTo: '/home'

                                 });

}]);


myApp.run(['$location', '$rootScope', function($location, $rootScope) {
    $rootScope.$on('$routeChangeSuccess', function (event, current, previous) {
        $rootScope.title = current.$$route.title;
    });
}]);

索引.html:

<title ng-bind="title +' - MyAPP Home'"> - MyApp</title>

请提出建议

Answer 1

无论如何都会触发$routeChangeSuccess事件，因此通过测试路由是否存在来避免错误:

myApp.run(['$location', '$rootScope', function($location, $rootScope) {
    $rootScope.$on('$routeChangeSuccess', function (event, current, previous) {

        if (current.hasOwnProperty('$$route')) {

            $rootScope.title = current.$$route.title;
        }
    });
}]);