ng-class基于ng-repeat突出显示活动菜单项.AngularJS

Question

我有一个基于以下示例的菜单:

 <nav  data-ng-controller="menuContrl" class="menuItem">
     <a  data-ng-class='{active:isActive("/{{item.path}}")}' data-ng-repeat="item in menu" href="#/{{item.path}}">
         <span>{{item.title}}</span>
     </a>
 </nav>

item是一个对象,包含菜单项信息.这是指令和控制器的JavaScript代码:

var app = angular.module("coolApp",[]);

function menuContrl($scope,$location){
    $scope.menu=menu;
    $scope.isActive = function(path){
        return ($location.path()==path)
    } 
}

问题是,ng-class设置class到active页面渲染过程中只有一次,但是当你点击一个菜单项,没有一切发生的时候.我想这是因为菜单本身没有重新加载,我只是在里面更改数据<div>.那么如何在不重新加载整个页面的情况下使其工作呢？

Answer 1

试试这个: - http://jsfiddle.net/uDPHL/146/

旧版本中存在此问题angular js Reference,将问题升级到angular js 1.2.0版本后问题得到解决.

JS: -

var navList = angular.module('navList', []);    

navList.controller('navCtrl', ['$scope', '$location', function ($scope, $location) {

    $scope.navLinks = [{
        Title: 'home',
        LinkText: 'Home',
    }, {
        Title: 'about',
        LinkText: 'About Us'
    }, {
        Title: 'contact',
        LinkText: 'Contact Us'
    }];

    $scope.navClass = function (page) {
        var currentRoute = $location.path().substring(1) || 'home';
        return page === currentRoute ? 'active' : '';
    };   

}]);

HTML: -

<div class="well sidebar-nav" ng-app="navList">
    <ul class="nav nav-list" ng-controller="navCtrl">
        <li ng-repeat="navLink in navLinks" ng-class="navClass('{{navLink.Title}}')"> <a href='#/{{navLink.Title}}'>{{navLink.LinkText}}</a> 
        </li>
    </ul>
</div>

Answer 2

我发现如果你去的话会更容易一些:

<li ng-repeat="i in mainMenu" ng-class="{'active':i.path == path}">

然后你可以只更改控制器中的$ scope.path.

Answer 3

//app.run
App.run(["$rootScope", "$state", "$stateParams",function ($rootScope, $state, $stateParams) {
        // Set reference to access them from any scope
        $rootScope.$route = $state;
}]);
        

// app.config
        $stateProvider
            .state('admin', {
                url: '/admin/',
                templateUrl: 'app/admin/admin.html',
                controller: 'AdminController',
            })
            .state('admin.dashboard', {
                url: 'dashboard',
                title: 'Dashboard',
                activetab: 'dashboard',
                controller: 'DashboardController',
                templateUrl: 'app/admin/dashboard.html',

            })
            .state('admin.view1', {
                url: 'view1',
                title: 'view1',
                activetab: 'view1',
                controller: 'view1Controller',
                templateUrl: 'app/admin/view1.html',
               
            })
            .state('admin.view2', {
                url: 'view2',
                title: 'view2',
                activetab: 'view2',
                controller: 'View2Controller',
                templateUrl: 'app/admin/view2.html',
            });

<li class="h4" ng-class="{'active': $route.current.activetab == 'dashboard'}">
                        <a>Dashboard</a>
                    </li>
                    <li class="h4" ng-class="{'active': $route.current.activetab == 'view1'}">
                        <a>view1</a>
                    </li>
                    <li class="h4" ng-class="{'active': $route.current.activetab == 'view2'}">
                        <a active-link="active">view2</a>
                    </li>