angularjs中下拉框select option默认值

<ion-view hide-nav-bar="true">
  <ion-content>
    <div class="list card">
      <div>
        <label class="item item-input item-select">
          <div class="input-label">
            <span>安排类型</span>
          </div>
          <select
            ng-change="selectAction()"
            ng-model="selectedType.value"
            ng-init="selectedType.value = ‘‘"
          >
            <option value="">-- 请选择 --</option>
            <option
              ng-repeat="item in workArrangeTypes"
              value="{{item.value}}"
            >{{item.name}}</option>
          </select>
        </label>
      </div>
      <div class="item">
        <button style="width: 100%;" class="button button-positive" ng-click="submitWork()">提交安排工作</button>
      </div>
     </div>
  </ion-content>
</ion-view>

/************************************** 区域管理 *************************************/
.controller(‘RegionalManageCtrl‘, [‘$scope‘,function($scope) {
  /*** 测试 ***/
  $scope.selectedType = {value: 1}; // 默认值
  $scope.workArrangeTypes = [
    {name: ‘社区服务‘, value: 1},
    {name: ‘教育学习‘, value: 2},
    {name: ‘思想汇报‘, value: 3},
    {name: ‘电话汇报‘, value: 4},
    {name: ‘家庭访问‘, value: 5}
  ]; // 工作安排类型

  // 每次option改变时自动调用该方法
  $scope.selectAction = function() {
    console.log($scope.selectedType.value); // 5
  }

  /**
   * 提交工作安排
   */
  $scope.submitWork = function() {
    console.log($scope.selectedType); // {value: 5}
  }
}])