Javascript 如何根据angularjs onchange中下拉选项的选择值在div上添加动态id

Javascript 如何根据angularjs onchange中下拉选项的选择值在div上添加动态id,javascript,html,angularjs,Javascript,Html,Angularjs,这里我有一个选择框,一旦更改下拉列表,我需要根据下拉列表中所选选项的值在div上添加动态id。我在alert中提到了一旦更改要添加的id。下面是代码 html 您可以在HTML中执行此操作: 您可以在更新功能中执行此操作: $scope.update = function() { if($scope.x == 'city'){ $scope.id = 'city1'; } if($scope.x == 'state'){ $scope.id =

这里我有一个选择框,一旦更改下拉列表,我需要根据下拉列表中所选选项的值在div上添加动态id。我在alert中提到了一旦更改要添加的id。下面是代码

html
您可以在HTML中执行此操作:

您可以在更新功能中执行此操作:

$scope.update = function() { 
   if($scope.x == 'city'){
       $scope.id = 'city1';
   } 
   if($scope.x == 'state'){
       $scope.id = 'mystate';
   }
   if($scope.x == 'country'){
       $scope.id = 'mycountry';
   }

}
var app=angular.modulemyApp,[]; app.controllermyCtrl,函数$scope{ $scope.update=函数{ 如果$scope.x==“城市”{ $scope.selectedValue='cityName'; }如果$scope.x=='state'{ $scope.selectedValue='stateName'; }如果$scope.x=='country'{ $scope.selectedValue='countryName'; }否则{ $scope.selectedValue=; } } }; 请选择 城市 州 国家 您已选择:-{selectedValue}
你有vlaue而不是ValueThank谢谢你的回答,问题解决了,现在我想根据所选选项在div中添加动态id。一旦更改,我更新了代码。错误。您不需要在回调中传递ngModel。它已经在范围内了,这是没有用的,因为这应该是一个评论,我理解,但我还没有能力在OP的帖子上发表评论。
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
  $scope.update = function() { 
   if($scope.x == 'city'){
   alert('add id as city1 inside ablove div');
   }
   if($scope.x == 'state'){
   alert('add id as mystate inside ablove div');
   }
   if($scope.x == 'country'){
   alert('add id as mycountry inside ablove div');
   }

}
});
$scope.update = function() { 
   if($scope.x == 'city'){
       $scope.id = 'city1';
   } 
   if($scope.x == 'state'){
       $scope.id = 'mystate';
   }
   if($scope.x == 'country'){
       $scope.id = 'mycountry';
   }

}
  you need to use ngChange and pass ngModel object as argument to your ngChange function
    **Example:**
    <div ng-app="App" >
      <div ng-controller="ctrl">
        <select ng-model="blisterPackTemplateSelected" ng-change="changedValue(blisterPackTemplateSelected)" 
                data-ng-options="blisterPackTemplate as blisterPackTemplate.name for blisterPackTemplate in blisterPackTemplates">
          <option value="">Select Account</option>
        </select>
        {{itemList}}     
      </div>       
    </div>
js:
function ctrl($scope) {
  $scope.itemList = [];
  $scope.blisterPackTemplates = [{id:1,name:"a"},{id:2,name:"b"},{id:3,name:"c"}];

  $scope.changedValue = function(item) {
    $scope.itemList.push(item.name);
  }       
}
Live example: http://jsfiddle.net/choroshin/9w5XT/4/