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
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
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;
}]);
其他回答
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
$('nav a[href*="' + app_name+'"]').closest('li').addClass('active');
当然还有css:
.active{background:red;}
如果你有这样的HTML,这是有效的:
<ul><li><a href="/ee">ee</a></li><li><a href="/dd">dd</a></li></ul>
这将自动添加类活跃使用页面url和颜色你的背景为红色,如果你在www.somesite.com/ee thaen ee是'应用程序',它将是活跃的
结合@Olivier的AngularStrap回答,我也实现了kevinknelson的回答:https://github.com/twbs/bootstrap/issues/9013。
Bootstrap3导航栏本来就不是为单页面(比如Angular)应用设计的,因此当菜单在小屏幕上时,点击时不会崩溃。
JavaScript
/**
* Main AngularJS Web Application
*/
var app = angular.module('yourWebApp', [
'ngRoute'
]);
/**
* Setup Main Menu
*/
app.controller('MainNavCtrl', [ '$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 === $location.path();
};
}]);
HTML
<div class="navbar-collapse collapse" ng-controller="MainNavCtrl">
<ul id="add-magic-line" class="nav navbar-nav navbar-right">
<li data-ng-class="{current_page_item: isActive('{{ menuItem.url }}')}" data-ng-repeat="menuItem in menuItems">
<a data-ng-href="#{{menuItem.url}}" title="{{menuItem.title}}">
{{menuItem.name}}
</a>
</li>
</ul>
</div>
首先,这个问题可以用很多方法来解决。这种方式可能不是最优雅的,但它确实有效。
这里有一个简单的解决方案,你应该能够添加到任何项目。当你配置你的路由时,你可以添加一个“pageKey”或其他属性,你可以用它来关闭。另外,你可以在$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>
感谢@Pylinux。我使用了他的技术,并对其进行了修改,以支持“一级”下拉菜单(sub ul/li),因为这是我所需要的。在下面的小提琴链接中看到它的实际操作。
根据pylinux的答案- http://jsfiddle.net/abhatia/en4qxw6g/更新了Fiddle
为了支持一级下拉菜单,我做了以下三个修改: 1. 为li下的“a”元素添加了一个类值dd(下拉),该元素需要有子ul列表。
<li><a class="dd">This link points to #/fun5</a>
<ul>
<li><a href="#/fun6?some=data">This link points to #/fun6</a>
</li>
<li><a href="#/fun7?some=data">This link points to #/fun7</a>
</li>
<li><a href="#/fun8?some=data">This link points to #/fun8</a>
</li>
<li><a href="#/fun9?some=data">This link points to #/fun9</a>
</li>
</ul>
</li>
2. 更新Javascript以添加以下新逻辑。
if(angular.element(li).parent().parent().children('a').hasClass("dd"))
{angular.element(li).parent().parent().children('a.dd').addClass('active');}
3.更新后的CSS添加如下内容:
a.active {background-color:red;}
希望这将有助于有人寻求实现单级下拉菜单。