在AngularJs中关闭下拉菜单单击外部

<div ng-controller="DropdownController">
  <button ng-click="toggleDropdown()">Toggle Dropdown</button>
  <ul ng-show="isDropdownOpen" ng-click="closeDropdown()">
    <li>Option 1</li>
    <li>Option 2</li>
    <li>Option 3</li>
  </ul>
</div>

angular.module('myApp', [])
  .controller('DropdownController', function($scope) {
    $scope.isDropdownOpen = false;

    $scope.toggleDropdown = function() {
      $scope.isDropdownOpen = !$scope.isDropdownOpen;
    };

    $scope.closeDropdown = function() {
      $scope.isDropdownOpen = false;
    };
  });