如果我有一个导航栏在引导项目

Home | About | Contact

当每个菜单项处于活动状态时,如何为它们设置活动类?也就是说,当角路由为at时,我如何设置class="active"

#/ home #/about用于about页面 #/contact为联系人页面


当前回答

首先,这个问题可以用很多方法来解决。这种方式可能不是最优雅的,但它确实有效。

这里有一个简单的解决方案,你应该能够添加到任何项目。当你配置你的路由时,你可以添加一个“pageKey”或其他属性,你可以用它来关闭。另外,你可以在$route对象的$routeChangeSuccess方法上实现一个监听器来监听路由更改是否成功完成。

当您的处理程序触发时,您将获得页面键,并使用该键来定位需要为该页“ACTIVE”的元素,然后应用ACTIVE类。

Keep in mind you need a way to make ALL the elements "IN ACTIVE". As you can see i'm using the .pageKey class on my nav items to turn them all off, and I'm using the .pageKey_{PAGEKEY} to individually turn them on. Switching them all to inactive, would be considered a naive approach, potentially you'd get better performance by using the previous route to make only active items inactive, or you could alter the jquery selector to only select active items to be made inactive. Using jquery to select all active items is probably the best solution because it ensures everything is cleaned up for the current route in case of any css bugs that might have been present on the previous route.

这意味着要修改这行代码:

$(".pagekey").toggleClass("active", false);

到这个

$(".active").toggleClass("active", false);

下面是一些示例代码:

给出一个引导导航条

<div class="navbar navbar-inverse">
    <div class="navbar-inner">
        <a class="brand" href="#">Title</a>
        <ul class="nav">
            <li><a href="#!/" class="pagekey pagekey_HOME">Home</a></li>
            <li><a href="#!/page1/create" class="pagekey pagekey_CREATE">Page 1 Create</a></li>
            <li><a href="#!/page1/edit/1" class="pagekey pagekey_EDIT">Page 1 Edit</a></li>
            <li><a href="#!/page1/published/1" class="pagekey pagekey_PUBLISH">Page 1 Published</a></li>
        </ul>
    </div>
</div>

以及一个角模块和控制器,如下所示:

<script type="text/javascript">

    function Ctrl($scope, $http, $routeParams, $location, $route) {

    }



    angular.module('BookingFormBuilder', []).
        config(function ($routeProvider, $locationProvider) {
            $routeProvider.
                when('/', { 
                   template: 'I\'m on the home page', 
                   controller: Ctrl, 
                   pageKey: 'HOME' }).
                when('/page1/create', { 
                   template: 'I\'m on page 1 create', 
                   controller: Ctrl, 
                   pageKey: 'CREATE' }).
                when('/page1/edit/:id', { 
                   template: 'I\'m on page 1 edit {id}', 
                   controller: Ctrl, pageKey: 'EDIT' }).
                when('/page1/published/:id', { 
                   template: 'I\'m on page 1 publish {id}', 
                   controller: Ctrl, pageKey: 'PUBLISH' }).
                otherwise({ redirectTo: '/' });

            $locationProvider.hashPrefix("!");
        }).run(function ($rootScope, $http, $route) {

            $rootScope.$on("$routeChangeSuccess", 
                           function (angularEvent, 
                                     currentRoute,
                                     previousRoute) {

                var pageKey = currentRoute.pageKey;
                $(".pagekey").toggleClass("active", false);
                $(".pagekey_" + pageKey).toggleClass("active", true);
            });

        });

</script>

其他回答

首先,这个问题可以用很多方法来解决。这种方式可能不是最优雅的,但它确实有效。

这里有一个简单的解决方案,你应该能够添加到任何项目。当你配置你的路由时,你可以添加一个“pageKey”或其他属性,你可以用它来关闭。另外,你可以在$route对象的$routeChangeSuccess方法上实现一个监听器来监听路由更改是否成功完成。

当您的处理程序触发时,您将获得页面键,并使用该键来定位需要为该页“ACTIVE”的元素,然后应用ACTIVE类。

Keep in mind you need a way to make ALL the elements "IN ACTIVE". As you can see i'm using the .pageKey class on my nav items to turn them all off, and I'm using the .pageKey_{PAGEKEY} to individually turn them on. Switching them all to inactive, would be considered a naive approach, potentially you'd get better performance by using the previous route to make only active items inactive, or you could alter the jquery selector to only select active items to be made inactive. Using jquery to select all active items is probably the best solution because it ensures everything is cleaned up for the current route in case of any css bugs that might have been present on the previous route.

这意味着要修改这行代码:

$(".pagekey").toggleClass("active", false);

到这个

$(".active").toggleClass("active", false);

下面是一些示例代码:

给出一个引导导航条

<div class="navbar navbar-inverse">
    <div class="navbar-inner">
        <a class="brand" href="#">Title</a>
        <ul class="nav">
            <li><a href="#!/" class="pagekey pagekey_HOME">Home</a></li>
            <li><a href="#!/page1/create" class="pagekey pagekey_CREATE">Page 1 Create</a></li>
            <li><a href="#!/page1/edit/1" class="pagekey pagekey_EDIT">Page 1 Edit</a></li>
            <li><a href="#!/page1/published/1" class="pagekey pagekey_PUBLISH">Page 1 Published</a></li>
        </ul>
    </div>
</div>

以及一个角模块和控制器,如下所示:

<script type="text/javascript">

    function Ctrl($scope, $http, $routeParams, $location, $route) {

    }



    angular.module('BookingFormBuilder', []).
        config(function ($routeProvider, $locationProvider) {
            $routeProvider.
                when('/', { 
                   template: 'I\'m on the home page', 
                   controller: Ctrl, 
                   pageKey: 'HOME' }).
                when('/page1/create', { 
                   template: 'I\'m on page 1 create', 
                   controller: Ctrl, 
                   pageKey: 'CREATE' }).
                when('/page1/edit/:id', { 
                   template: 'I\'m on page 1 edit {id}', 
                   controller: Ctrl, pageKey: 'EDIT' }).
                when('/page1/published/:id', { 
                   template: 'I\'m on page 1 publish {id}', 
                   controller: Ctrl, pageKey: 'PUBLISH' }).
                otherwise({ redirectTo: '/' });

            $locationProvider.hashPrefix("!");
        }).run(function ($rootScope, $http, $route) {

            $rootScope.$on("$routeChangeSuccess", 
                           function (angularEvent, 
                                     currentRoute,
                                     previousRoute) {

                var pageKey = currentRoute.pageKey;
                $(".pagekey").toggleClass("active", false);
                $(".pagekey_" + pageKey).toggleClass("active", true);
            });

        });

</script>

如果你不愿意使用AngularStrap,那么这个指令可以帮到你!这是对https://stackoverflow.com/a/16231859/910764的修改。

JavaScript

angular.module('myApp').directive('bsNavbar', ['$location', function ($location) {
  return {
    restrict: 'A',
    link: function postLink(scope, element) {
      scope.$watch(function () {
        return $location.path();
      }, function (path) {
        angular.forEach(element.children(), (function (li) {
          var $li = angular.element(li),
            regex = new RegExp('^' + $li.attr('data-match-route') + '$', 'i'),
            isActive = regex.test(path);
          $li.toggleClass('active', isActive);
        }));
      });
    }
  };
}]);

HTML

<ul class="nav navbar-nav" bs-navbar>
  <li data-match-route="/home"><a href="#/home">Home</a></li>
  <li data-match-route="/about"><a href="#/about">About</a></li>
</ul>

注意:上面的HTML类假设您正在使用Bootstrap 3.x

你可以使用angular-ui-utils的ui-route指令:

<a ui-route ng-href="/">Home</a>
<a ui-route ng-href="/about">About</a>
<a ui-route ng-href="/contact">Contact</a>

or:

头控制器

/**
 * Header controller
 */
angular.module('myApp')
  .controller('HeaderCtrl', function ($scope) {
    $scope.menuItems = [
      {
        name: 'Home',
        url:  '/',
        title: 'Go to homepage.'
      },
      {
        name:   'About',
        url:    '/about',
        title:  'Learn about the project.'
      },
      {
        name:   'Contact',
        url:    '/contact',
        title:  'Contact us.'
      }
    ];
  });

索引页

<!-- index.html: -->
<div class="header" ng-controller="HeaderCtrl">
  <ul class="nav navbar-nav navbar-right">
    <li ui-route="{{menuItem.url}}" ng-class="{active: $uiRoute}"
      ng-repeat="menuItem in menuItems">
      <a ng-href="#{{menuItem.url}}" title="{{menuItem.title}}">
        {{menuItem.name}}
      </a>
    </li>
  </ul>
</div>

如果你正在使用ui-utils,你可能也会对ui-router感兴趣,用于管理部分/嵌套视图。

我刚刚写了一个指令来处理这个问题,所以你可以简单地将属性bs-active-link添加到父元素<ul>,任何时候路由发生变化,它都会找到匹配的链接,并将活动类添加到相应的<li>。

你可以在这里看到它的运行:http://jsfiddle.net/8mcedv3b/

示例HTML:

<ul class="nav navbar-nav" bs-active-link>
  <li><a href="/home">Home</a></li>
  <li><a href="/contact">Contact</a></li>
</ul>

Javascript:

angular.module('appName')
.directive('bsActiveLink', ['$location', function ($location) {
return {
    restrict: 'A', //use as attribute 
    replace: false,
    link: function (scope, elem) {
        //after the route has changed
        scope.$on("$routeChangeSuccess", function () {
            var hrefs = ['/#' + $location.path(),
                         '#' + $location.path(), //html5: false
                         $location.path()]; //html5: true
            angular.forEach(elem.find('a'), function (a) {
                a = angular.element(a);
                if (-1 !== hrefs.indexOf(a.attr('href'))) {
                    a.parent().addClass('active');
                } else {
                    a.parent().removeClass('active');   
                };
            });     
        });
    }
}
}]);

这对我来说很管用:

  var domain = '{{ DOMAIN }}'; // www.example.com or dev.example.com
  var domain_index =  window.location.href.indexOf(domain);
  var long_app_name = window.location.href.slice(domain_index+domain.length+1); 
  // this turns http://www.example.com/whatever/whatever to whatever/whatever
  app_name = long_app_name.slice(0, long_app_name.indexOf('/')); 
  //now you are left off with just the first whatever which is usually your app name

然后使用jquery(也适用于angular)添加类active

$('nav a[href*="' + app_name+'"]').closest('li').addClass('active');

当然还有css:

.active{background:red;}

如果你有这样的HTML,这是有效的:

<ul><li><a href="/ee">ee</a></li><li><a href="/dd">dd</a></li></ul>

这将自动添加类活跃使用页面url和颜色你的背景为红色,如果你在www.somesite.com/ee thaen ee是'应用程序',它将是活跃的