Question

我在我的angularjs项目上工作。我有选择下拉元素：

<select ng-model="register.countryId" 
        ng-options="country.id as country.name for country in register.countries">
<option value = -1 selected>All items</option>
            </select>

这个填充下拉元素的对象数组：

      $scope.register.countries = [{
          id: "1",
          name: "India"
      }, {
          id: "2",
          name: "USA"
      }, {
          id: "3",
          name: "UK"
      }, {
          id: "4",
          name: "Nepal"
      }];

这是planker。

如何设定此默认值：

<option value = -1 selected>All items</option>

Answer 1

您必须使用该默认值设置模型，angularjs将显示默认选择的选项。在您的控制器中：

  $scope.register.countries = [{
      id: "1",
      name: "India"
  }, {
      id: "2",
      name: "USA"
  }, {
      id: "3",
      name: "UK"
  }, {
      id: "4",
      name: "Nepal"
  }];

  // Here you set your model's value
  $scope.register.countryId = $scope.register.countries[0].id;// 0 is index and will be replaced by index of default value in the array

  // This also works fine. And show selected option is india
  $scope.register.countryId = "1";

如何在angularjs dropbox中设置默认值

1 个答案: