angular标签的显示和隐藏

html：

<div ng-controller='DeathrayMenuController'>

        <button ng-click='toggleMenu()'>Toggle Menu</button>
        <ul ng-show='menuState.show'>
            <li ng-click='stun()'>Stun</li>
            <li ng-click='disintegrate()'>Disintegrate</li>
            <li ng-click='erase()'>Erase from history</li>

        </ul>

 <div/>

js：

var myCSSModule = angular.module('MyCSSModule', []);
myCSSModule.controller('DeathrayMenuController', ['$scope',
    function($scope) {
        $scope.menuState={show:false};
        $scope.toggleMenu = function() {
            $scope.menuState.show = !$scope.menuState.show;
        };
    }
])

ng-hide与ng-show同理