admin管理员组

文章数量:1405170

I'm not sure the best way to approach this.

I want to dynamically set a class on my /login route so that my login page can have a large background image.

What is the best way to approach this?

Here's my current code:

<!DOCTYPE html>
<html class="SOME_DYNAMIC_CLASS_HERE_BASED_ON_ROUTE">
...
</html>
<body ng-app="myApp">
  <div ng-view=""></div>
</body>

angular.module('myApp', ['ngRoute']).config(function ($routeProvider) {
    $routeProvider
      .when('/login', {
        templateUrl: 'login.html',
        controller: 'LoginCtrl'
        })
      .when('/', {
        templateUrl: 'dashboard.html',
        controller: 'DashboardCtrl'
      })

I'm not sure the best way to approach this.

I want to dynamically set a class on my /login route so that my login page can have a large background image.

What is the best way to approach this?

Here's my current code:

<!DOCTYPE html>
<html class="SOME_DYNAMIC_CLASS_HERE_BASED_ON_ROUTE">
...
</html>
<body ng-app="myApp">
  <div ng-view=""></div>
</body>

angular.module('myApp', ['ngRoute']).config(function ($routeProvider) {
    $routeProvider
      .when('/login', {
        templateUrl: 'login.html',
        controller: 'LoginCtrl'
        })
      .when('/', {
        templateUrl: 'dashboard.html',
        controller: 'DashboardCtrl'
      })
  • javascript
  • angularjs
Share Improve this question asked Nov 7, 2014 at 1:00 CatfishCatfish 19.3k60 gold badges213 silver badges358 bronze badges 1
  • 1 @wbeange the issue here is scope - can you give the OP a clearer answer on how a directive might be used on the html element? I suppose if ng-app is on the html element a directive could work there, but I've never attempted using one outside of controller scope. – Shawn Erquhart Commented Nov 7, 2014 at 1:06
Add a ment  | 

3 Answers 3

Reset to default 7

You must have your ng-app attached in the <html> element, to have any sort of connection between angular and the view. Since you want something to change base on the current route of your application, then why not use those routes as a reference for your configuration, e.g. the $routeProvider configuration. Attach all your configuration, including configuration from classes to styles or any other configuration within the route object. You can then create a directive that listens to route changes via $routeChangeSuccess and then get the current route and other properties using the $route object defined as the second parameter of the $routeChangeSuccess listener, once you have those properties, you can do whatever you want with it e.g. append a class to that directive element.

DEMO

Javascript

Configuration

  .config(function ($routeProvider) {
    $routeProvider
      .when('/dashboard', {
        templateUrl: 'dashboard.html',
        'class': 'bg-dashboard'
      })
      .when('/login', {
        templateUrl: 'login.html',
        'class': 'bg-login'
      })
      .otherwise({redirectTo: '/login'});
  });

Directive

  .directive('classRoute', function($rootScope, $route) {

    return function(scope, elem, attr) {
      var previous = '';
      $rootScope.$on('$routeChangeSuccess', function(event, currentRoute) {
        var route = currentRoute.$$route;
        if(route) {

          var cls = route['class'];

          if(previous) {
            attr.$removeClass(previous);
          }

          if(cls) {
            previous = cls;
            attr.$addClass(cls);
          }
        }
      });
    };

  });

HTML

<html ng-app="myApp" class-route>...</html>

Using a directive is one way to go. 

.directive("routeClass", function($location, $parse) {
    var mapping = {};
    return {
      restrict: "A",
      scope: {},
      link: function(scope, element, attrs) {
        mapping = $parse(attrs["routeClass"])(scope);
        // do something with mapping and $location or $routeParams
      }
    }
  });

<any route-class="{'/': 'default', '/Book': 'book'}" />

Another - is to set it via $rootScope.

I know this is an old thread, but I came across it looking for some pointers. I have gone for the following method which feels more "Angular". Note, it is using a controllerAs-based directive:

ngModule.directive('routeClass', routeClass);

function routeClass($state, $log) {

    function controllerFn($scope) {

        var routeClass = this;

        $scope.$on('$stateChangeSuccess', function(){
            // I have a different class name assignment as the 
            // setup of my states is relatively plex, 
            // but this should demonstrate the idea
            routeClass.current = 'page-' + $state.current.name;
        });
    }

    return {
        controller: controllerFn,
        controllerAs: 'routeClass',
        restrict: 'A'
    };
}

And it is used as follows in index.html:

<body ng-app="app" route-class ng-class="{{routeClass.current}}">

本文标签： javascriptAngularJS dynamically set class on lthtmlgt tag based on routeStack Overflow

版权声明：本文标题：javascript - AngularJS dynamically set class on &lt;html&gt; tag based on route - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1744308003a2599893.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。