说下我经常写菜单的方式：
<ul> <li data-ng-class="{'active': highlight('/orders')}"> <a href="#/orders">Orders</a> </li> </ul>
菜单项是否高亮显示取决于controller中的highlight方法。
vm.highlight = funciton(path){
return $locaiton.path().substr(0, path.lenght) === path;
}
如果以Directive的方式会更简洁。
<ul menu-highlighter highlight-class-name="active"> <li><a href="#/customers">Customers</a></li> <li><a href="#/orders">Customers</a></li> <li><a href="#/about">Customers</a></li> </ul>
Directive大致是：
(function(){ var injectParams = ['$location']; var menuHighlighter = function($location){ var link = function(scope, element){ function setActive(){ var path = $location.path(); var className = scope.highlightClassName || 'active'; if(path){ angular.forEac(element.find('li'), function(li){ //<a href="#/customers">Customers</a> var anchor = li.querySelector('a'); //#/customers var href=https://www.jb51.net/(anchor && anchor.href) ? anchor.href : anchor.getAttribute('data-href').replace('#',''); //customers var trimmedHref = href.substr(href.indexOf('#/')+1, href.length); var basePath = path.substr(0, trimmedHref.length); if(trimmedHref === basePath){ angular.element(li).addClass(className); } else { angular.element(li).removeClass(className); } }); } } setActive(); scope.$on('$locationChangeSuccess', setActive); }; return { restrict: 'A', scope: { highlightClassName: '@' }, link: link } }; menuHighlighter.$inject = injectParams; angular.module('my.directives') .directive('menuHighlighter', menuHighlighter); }());
以上内容是针对AngualrJS中的Directive制作一个菜单的相关知识，希望对大家有所帮助。
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