Question

我需要帮助三个选定的DropDown菜单当第二个选择菜单打开后的一个选择菜单值和第三个选择菜单在第三个选择菜单中打开后，在angularjs.I中有创建小提琴，但我有一个问题，每当我传递时间显示在字符串中的数据时，数据都在数组中。

评论中的小提琴链接..

Answer 1

请尝试这个小提琴，它会帮助你。

https://jsfiddle.net/annavester/Zd6uX/

function AjaxCtrl($scope) {
    $scope.countries = ['usa', 'canada', 'mexico', 'france'];
    $scope.$watch('country', function(newVal) {
        if (newVal) $scope.cities = ['Los Angeles', 'San Francisco'];
    });
    $scope.$watch('city', function(newVal) {
        if (newVal) $scope.suburbs = ['SOMA', 'Richmond', 'Sunset'];
    });
}

function StaticCtrl($scope) {
    $scope.countries = {
        'usa': {
            'San Francisco': ['SOMA', 'Richmond', 'Sunset'],
            'Los Angeles': ['Burbank', 'Hollywood']
        },
        'canada': {
            'People dont live here': ['igloo', 'cave']
        }
    };
}

  <div ng-controller="AjaxCtrl">
      <h1>AJAX - Oriented</h1>
    <div>
        Country: 
        <select id="country" ng-model="country" ng-options="country for country in countries">
          <option value=''>Select</option>
        </select>
    </div>
    <div>
        City: <select id="city" ng-disabled="!cities" ng-model="city" ng-options="city for city in cities"><option value=''>Select</option></select>
    </div>
    <div>
        Suburb: <select id="suburb" ng-disabled="!suburbs" ng-model="suburb" ng-options="suburb for suburb in suburbs"><option value=''>Select</option></select>        
    </div>
</div>
  <div ng-controller="StaticCtrl">
      <h1>Static - Oriented</h1>
      <p>This approach may be better when you have the entire dataset</p>
    <div>
        Country: 
        <select id="country" ng-model="cities" ng-options="country for (country, cities) in countries">
          <option value=''>Select</option>
        </select>
    </div>
    <div>
        City: <select id="city" ng-disabled="!cities" ng-model="suburbs" ng-options="city for (city, suburbs) in cities"><option value=''>Select</option></select>
    </div>
    <div>
        Suburb: <select id="suburb" ng-disabled="!suburbs" ng-model="suburb" ng-options="suburb for suburb in suburbs"><option value=''>Select</option></select>        
    </div>
  </div>

试试吧。

如何在angularjs中选择三个菜单句柄

1 个答案: