AngularJS在为当前页面的链接设置一个活动类方面有任何帮助吗?
我想一定有什么神奇的方法可以做到,但我似乎找不到。
我的菜单是这样的:
<ul>
<li><a class="active" href="/tasks">Tasks</a>
<li><a href="/actions">Tasks</a>
</ul>
我在我的路由中为它们每个都有控制器:TasksController和ActionsController。
但是我想不出一种方法将a链接上的“活动”类绑定到控制器。
有提示吗?
我找到了最简单的解决办法。只是比较HTML中的indexOf
var myApp = angular.module('myApp', []);
myApp.run(function($rootScope) {
$rootScope.$on("$locationChangeStart", function(event, next, current) {
$rootScope.isCurrentPath = $location.path();
});
});
<li class="{{isCurrentPath.indexOf('help')>-1 ? 'active' : '' }}">
<a href="/#/help/">
Help
</a>
</li>
对我来说最重要的是不要更改引导的默认代码。
这是我的菜单控制器搜索菜单选项,然后添加我们想要的行为。
file: header.js
function HeaderCtrl ($scope, $http, $location) {
$scope.menuLinkList = [];
defineFunctions($scope);
addOnClickEventsToMenuOptions($scope, $location);
}
function defineFunctions ($scope) {
$scope.menuOptionOnClickFunction = function () {
for ( var index in $scope.menuLinkList) {
var link = $scope.menuLinkList[index];
if (this.hash === link.hash) {
link.parentElement.className = 'active';
} else {
link.parentElement.className = '';
}
}
};
}
function addOnClickEventsToMenuOptions ($scope, $location) {
var liList = angular.element.find('li');
for ( var index in liList) {
var liElement = liList[index];
var link = liElement.firstChild;
link.onclick = $scope.menuOptionOnClickFunction;
$scope.menuLinkList.push(link);
var path = link.hash.replace("#", "");
if ($location.path() === path) {
link.parentElement.className = 'active';
}
}
}
<script src="resources/js/app/header.js"></script>
<div class="navbar navbar-fixed-top" ng:controller="HeaderCtrl">
<div class="navbar-inner">
<div class="container-fluid">
<button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span> <span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="#"> <img src="resources/img/fom-logo.png"
style="width: 80px; height: auto;">
</a>
<div class="nav-collapse collapse">
<ul class="nav">
<li><a href="#/platforms">PLATFORMS</a></li>
<li><a href="#/functionaltests">FUNCTIONAL TESTS</a></li>
</ul>
</div>
</div>
</div>
</div>
也有同样的问题。以下是我的解决方案:
.directive('whenActive',
[
'$location',
($location)->
scope: true,
link: (scope, element, attr)->
scope.$on '$routeChangeSuccess',
() ->
loc = "#"+$location.path()
href = element.attr('href')
state = href.indexOf(loc)
substate = -1
if href.length > 3
substate = loc.indexOf(href)
if loc.length is 2
state = -1
#console.log "Is Loc: "+loc+" in Href: "+href+" = "+state+" and Substate = "+substate
if state isnt -1 or substate isnt -1
element.addClass 'selected'
element.parent().addClass 'current-menu-item'
else if href is '#' and loc is '#/'
element.addClass 'selected'
element.parent().addClass 'current-menu-item'
else
element.removeClass 'selected'
element.parent().removeClass 'current-menu-item'
])
以上的指导性建议对我都没用。如果你有一个这样的引导导航栏
<ul class="nav navbar-nav">
<li><a ng-href="#/">Home</a></li>
<li><a ng-href="#/about">About</a></li>
...
</ul>
(可以是$ yo的angular启动)然后你要将.active添加到父元素<li>类列表中,而不是元素本身;即<li class="active">..</li>. .所以我写了这个:
.directive('setParentActive', ['$location', function($location) {
return {
restrict: 'A',
link: function(scope, element, attrs, controller) {
var classActive = attrs.setParentActive || 'active',
path = attrs.ngHref.replace('#', '');
scope.location = $location;
scope.$watch('location.path()', function(newPath) {
if (path == newPath) {
element.parent().addClass(classActive);
} else {
element.parent().removeClass(classActive);
}
})
}
}
}])
使用set-parent-active;.active是默认值,所以不需要设置
<li><a ng-href="#/about" set-parent-active>About</a></li>
当链接激活时,父元素<li>将是.active。要使用另一个.active类,如.highlight,只需
<li><a ng-href="#/about" set-parent-active="highlight">About</a></li>