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

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

其他回答

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。

JavaScript

/**
 * Main AngularJS Web Application
 */

var app = angular.module('yourWebApp', [
    'ngRoute'
]);


/**
 * Setup Main Menu
 */

app.controller('MainNavCtrl', [ '$scope', '$location', function ( $scope, $location) {
    $scope.menuItems = [
        {
            name: 'Home',
            url:  '/home',
            title: 'Welcome to our Website'
        },
        {
            name: 'ABOUT',
            url:  '/about',
            title: 'Know about our work culture'
        },
        {
            name:   'CONTACT',
            url:    '/contact',
            title:  'Get in touch with us'
        }
    ];

    $scope.isActive = function (viewLocation) {
        return viewLocation === $location.path();
    };
}]);

HTML

  <div class="navbar-collapse collapse" ng-controller="MainNavCtrl">
    <ul id="add-magic-line" class="nav navbar-nav navbar-right">
      <li data-ng-class="{current_page_item: isActive('{{ menuItem.url }}')}" data-ng-repeat="menuItem in menuItems">
        <a data-ng-href="#{{menuItem.url}}" title="{{menuItem.title}}">
          {{menuItem.name}}
        </a>
      </li>
    </ul>
  </div>

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

我使用ng-class指令和$location来实现它。

<ul class="nav">
<li data-ng-class="{active: ($location.path() == '/') }">
    <a href="#/">Carpeta Amarilla</a>
</li>
<li class="dropdown" data-ng-class="{active: ($location.path() == '/auditoria' || $location.path() == '/auditoria/todos') }">
    <a class="dropdown-toggle" data-toggle="dropdown" href="#">
        Auditoria
        <b class="caret"></b>
    </a>
    <ul class="dropdown-menu pull-right">
        <li data-ng-class="{active: ($location.path() == '/auditoria') }">
            <a href="#/auditoria">Por Legajo</a>
        </li>
        <li data-ng-class="{active: ($location.path() == '/auditoria/todos') }">
            <a href="#/auditoria/todos">General</a>
        </li>
    </ul>
</li>
</ul>

它要求导航条在一个主控制器中,可以像这样访问$location服务:

bajasApp.controller('MenuCntl', ['$scope','$route', '$routeParams', '$location', 
   function MenuCntl($scope, $route, $routeParams, $location) {
   $scope.$route = $route;
   $scope.$location = $location;
   $scope.$routeParams = $routeParams;
}]);

使用对象作为切换变量。 你可以很简单地用以下方法做到这一点:

<ul class="nav navbar-nav">
   <li ng-class="{'active':switch.linkOne}" ng-click="switch = {linkOne: true}"><a href="/">Link One</a></li>
   <li ng-class="{'active':switch.linkTwo}" ng-click="switch = {link-two: true}"><a href="/link-two">Link Two</a></li>
</ul>

每次单击链接,switch对象都会被一个新对象替换,其中只有正确的switch对象属性为true。未定义的属性将被赋值为false,因此依赖于它们的元素将不会被赋值为活动类。