javascript - angular.element ('#someId' ).scope() 在 IE 9 中返回未定义

Question

我正在使用 angular.js 1.2.13。我正在使用第三方工具，该工具使用 Angular.js 并集成到我的项目中，我在 .js 文件中使用 Angular.js 代码。

为了获取范围数据，我在 HTML 元素上使用 .scope() 。它在 chrome 和 mozilla 中工作正常，但在 IE 9 上，angular.element('#someId').scope() 返回未定义。

我已经调试并发现 angular.element('#someId') 返回预期的元素，但 .scope() 返回未定义的元素。

在 angular.js 的网站上，写着 1.2.X 完美兼容 IE9。为什么我会收到此错误。

    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>


//This code is written in external js file appConfig.js which is imported after angular.js
angular.module('modelerApp', []).run(['$rootScope', function($rootScope){

    //This function is defined by me
    $rootScope.bootstrap = function() {
        //some logic needs to be executed here which should happen only after page load, so I am keeping it inside rootscope
    }

}]);


<script type="text/javascript">
//This code is written in external js file which is getting imported in this page
  $(document).ready(function(){

    var scope = angular.element('#someId').scope(); //undefined

    //I need scope to access rootscope of angular in order to execute logic inside bootstrap method
    var rootScope = scope.$root; 

    //I want to execute logic written in bootstrap method, which is in $rootScope
    //This logic uses angular js routes and all, and thus needs to be inside angular code.
    //This has nothing to do with specific controller
    rootScope.bootstrap();

  });

</script>

<div ng-app="modelerApp" ng-controller="itemController">
  <div id="main">
    <div id="someId">
    </div>
  </div>
</div>

感谢任何帮助。

Answer 1

您正在尝试访问 Angular 范围之外的范围，并且您不在 Angular 的路径上，您不应该以这种方式将 Angular 与 jQuery 一起使用，而是在 Angular 之上包含 jQuery，以利用 jQuery 而不是 Angular 的 jqLit​​e:

angular.module('modelerApp', []).controller('itemController', function($scope) {

  var scope = angular.element($('#someId')).scope(); //undefined
  $scope.obj = {
    scopeId: scope.$id
  };
  //console.log(scope.$id);

});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="modelerApp" ng-controller="itemController">
  {{obj.scopeId}}
  <div id="main">
    <div id="someId">
    </div>
  </div>
</div>

A detailed post about thinking in angular if one has a jquery background.