如果我在引导中有一个导航栏
Home | About | Contact
当每个菜单项处于活动状态时,如何为其设置活动类?也就是说,当角度布线处于最佳位置时,如何设置class=“active”
#/
for home#/about
for the about page#/联系人
为联系人页面
一种非常优雅的方法是使用ng控制器在ng视图之外运行单个控制器:
<div class="collapse navbar-collapse" ng-controller="HeaderController">
<ul class="nav navbar-nav">
<li ng-class="{ active: isActive('/')}"><a href="/">Home</a></li>
<li ng-class="{ active: isActive('/dogs')}"><a href="/dogs">Dogs</a></li>
<li ng-class="{ active: isActive('/cats')}"><a href="/cats">Cats</a></li>
</ul>
</div>
<div ng-view></div>
并在controllers.js中包括:
function HeaderController($scope, $location)
{
$scope.isActive = function (viewLocation) {
return viewLocation === $location.path();
};
}
我刚刚编写了一个指令来处理这个问题,因此您只需将属性bs active link
添加到父级
你可以在这里看到它的作用:http://jsfiddle.net/8mcedv3b/
HTML示例:
<ul class="nav navbar-nav" bs-active-link>
<li><a href="/home">Home</a></li>
<li><a href="/contact">Contact</a></li>
</ul>
Javascript:
angular.module('appName')
.directive('bsActiveLink', ['$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
$location.path()]; //html5: true
angular.forEach(elem.find('a'), function (a) {
a = angular.element(a);
if (-1 !== hrefs.indexOf(a.attr('href'))) {
a.parent().addClass('active');
} else {
a.parent().removeClass('active');
};
});
});
}
}
}]);
你可以看看AngularStrap,导航栏指令似乎就是你要找的:
https://github.com/mgcrea/angular-strap/blob/master/src/navbar/navbar.js
.directive('bsNavbar', function($location) {
'use strict';
return {
restrict: 'A',
link: function postLink(scope, element, attrs, controller) {
// Watch for the $location
scope.$watch(function() {
return $location.path();
}, function(newValue, oldValue) {
$('li[data-match-route]', element).each(function(k, li) {
var $li = angular.element(li),
// data('match-rout') does not work with dynamic attributes
pattern = $li.attr('data-match-route'),
regexp = new RegExp('^' + pattern + '$', ['i']);
if(regexp.test(newValue)) {
$li.addClass('active');
} else {
$li.removeClass('active');
}
});
});
}
};
});
要使用此指令,请执行以下操作:
>
从下载AngularStraphttp://mgcrea.github.io/angular-strap/
在引导后将脚本包含在页面上。js:
将指令添加到模块:angular。模块('myApp',['$strap.directives'])
将指令添加到导航栏:
在每个导航项上添加正则表达式: