Question

我无法理解如何定义具有隔离范围的指令（或内部）使用的函数。在以下代码中，为什么$scope.foo()函数不执行？我有没有正确的方法来解决这个问题？我正在寻找一个只有在用户登录时才可见的按钮，并且认为指令是封装/隔离该功能的好方法。

<!DOCTYPE html>
<html>

<head>
  <script src="https://code.angularjs.org/1.4.2/angular.js"></script>
  <script>
    angular.module('MyApp', [])
      .directive('myScopedDirective', function() {
        return {
          scope: {}, // <!-- isolate scope breaks things
          controller: function($scope) {
            // isolate scope prevents this function from being executed
            $scope.foo = function() {
              alert('myScopedDirective / foo()');
            };
          }
        };
      });
  </script>
</head>

<body>
  <div ng-app="MyApp">
    <!-- button doesn't work unless isolate scope is removed -->
    <button my-scoped-directive ng-click="foo()">directive container - foo()</button>
  </div>
</body>

</html>

Plunker：http://plnkr.co/edit/Sm81SzfdlTrziTismOg6

Answer 1

它无效，因为您在不同的范围ngClick和myScopedDirective使用了2个指令。您需要为您的指令创建一个模板并调用click函数，如下所示：

<!DOCTYPE html>
<html>

<head>
  <script src="https://code.angularjs.org/1.4.2/angular.js"></script>
  <script>
    angular.module('MyApp', [])
      .directive('myScopedDirective', function() {
        return {
          restrict: 'AE', // Can be defined as element or attribute
          scope: {},
          // Call the click function from your directive template
          template: '<button ng-click="foo()">directive container - foo()</button>',
          controller: function($scope) {
            $scope.foo = function() {
              alert('myDirective / foo()');
            };
          }
        };
      });
  </script>
</head>

<body>
  <div ng-app="MyApp">
    <my-scoped-directive></my-scoped-directive>
  </div>
</body>

</html>

工作plunker

Angular指令隔离范围：范围函数不会执行

1 个答案: