angular js中控制器之间的数据共享

Question

嗨，我是 Angularjs 的新手。我正在学习如何使用数据服务在两个控制器之间共享数据。查看教程，我制作了自己的程序，但无法正常工作。谁能建议我在这里做错了什么？

<!DOCTYPE html>
<html>
  <head>
    <title>AngularJS Services</title>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0-beta.5/angular.min.js"></script>
  </head>
  <body>
    <div ng-app="dataServiceApp">
            <div ng-controller="ChildCtrl">
                    <h2>First controller</h2>
                    <button>+</button>{{Holder.value}}
                  </div>
                  <div ng-controller="ChildCtrl2">
                    <h2>Second controller</h2>
                    <button>+</button>{{Holder.value}}
                  </div>
    </div>
    <script>
        var myapp = angular.module("dataServiceApp",[]);
        myapp.factory('Holder', function() {
  return {
    value: 0
  };
});
myapp.controller('ChildCtrl', function($scope, Holder) {
  $scope.Holder = Holder;
  $scope.increment = function() {
    $scope.Holder.value++;
  };
});

myapp.controller('ChildCtrl2', function($scope, Holder) {
  $scope.Holder = Holder;
  $scope.increment = function() {
    $scope.Holder.value++;
  };
});
    </script>
  </body>
</html>

Answer 1

您忘记为按钮注册 onclick 侦听器：

<button ng-click="increment()">+</button>{{Holder.value}}

希望这对您有所帮助。下面是完整的工作示例：

<!DOCTYPE html>
<html>
  <head>
    <title>AngularJS Services</title>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0-beta.5/angular.min.js"></script>
  </head>
  <body>
    <div ng-app="dataServiceApp">
            <div ng-controller="ChildCtrl">
                    <h2>First controller</h2>
                    <button ng-click="increment()">+</button>{{Holder.value}}
                  </div>
                  <div ng-controller="ChildCtrl2">
                    <h2>Second controller</h2>
                    <button ng-click="increment()">+</button>{{Holder.value}}
                  </div>
    </div>
    <script>
        var myapp = angular.module("dataServiceApp",[]);
        myapp.factory('Holder', function() {
  return {
    value: 0
  };
});
myapp.controller('ChildCtrl', function($scope, Holder) {
  $scope.Holder = Holder;
  $scope.increment = function() {
    $scope.Holder.value++;
  };
});

myapp.controller('ChildCtrl2', function($scope, Holder) {
  $scope.Holder = Holder;
  $scope.increment = function() {
    $scope.Holder.value++;
  };
});
    </script>
  </body>
</html>

p.s。我也完全同意 JB Nizet 的评论：检查你是否真的需要学习 AngularJS 而不是 Angular 2-7/VueJS/React.

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