$scope 角度问题答案

【问题标题】：$scope issue in angular$scope 角度问题
【发布时间】：2016-08-10 00:31:52
【问题描述】：

我已经看到很多关于这个问题的问题，但我不明白给出的答案。我看到了几个模块和控制器的例子，但是当我尝试它时，它不起作用。

我从一个网站复制了代码以检查它是否对我有用，但仍然无法正常工作。

这是代码：

var myapp = angular.module("myapp", []);
myapp.controller("HelloCtrl", function($scope) {
  $scope.user = {
    name: "name123",
    nickName: "nickName123",

    callMe: function() {
      var userObject = $scope.user;
      return userObject.name + " Known as " + userObject.nickName;
    }
  };
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myapp">
  <div ng-controller="HelloCtrl">
    <!--הטופס-->
    First Name:
    <input type="text" ng-model="user.name" />
    <br />Last Name:
    <input type="text" ng-model="user.nickName" />
    <br />

  </div>
</div>
{{user.callMe()}}

当我调试代码时，这是我得到的：

【问题讨论】：

你是否真的在 HTML 的任何地方包含了 Angular JS？
请检查浏览器控制台中的错误

标签： javascript html angularjs angularjs-scope

【解决方案1】：

{{user.callMe()}} 应该被包装到相应的控制器中。

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.12/angular.min.js"></script>
<div ng-app="myapp">
  <div ng-controller="HelloCtrl">
    <!--הטופס-->
    First Name:
    <input type="text" ng-model="user.name" />
    <br />Last Name:
    <input type="text" ng-model="user.nickName" />
    <br />{{user.callMe()}}
  </div>
</div>

<script>
  var myapp = angular.module("myapp", []);
  myapp.controller("HelloCtrl", function($scope) {
    $scope.user = {
      name: "name123",
      nickName: "nickName123",

      callMe: function() {
        var userObject = $scope.user;
        return userObject.name + " Known as " + userObject.nickName;
      }
    };
  });
</script>

【讨论】：

【解决方案2】：

您的 Angular 插值在您的 Angular 应用程序之外；-)

var myapp = angular.module("myapp", []);
myapp.controller("HelloCtrl",function($scope){
    $scope.user = {
        name: "name123",
        nickName: "nickName123",

        callMe: function(){
          console.log('called');
        var userObject = $scope.user;
        return userObject.name + " Known as " + userObject.nickName;
      }
    };
});

angular.element(document).ready(function() {
    angular.bootstrap(document.querySelector('#app'), ['myapp']);
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.7/angular.min.js"></script>

<div id="app" ng-controller="HelloCtrl">
        <!--הטופס-->
        First Name:<input type="text" ng-model="user.name" />
        <br />
        Last Name:<input type="text" ng-model="user.nickName" />
        <br />
{{user.callMe()}}
</div>

【讨论】：

【解决方案3】：

您的插值应该在控制器 div 中并添加对 angular.js 的引用

<div ng-app="myapp">
        <div ng-controller="HelloCtrl">
            <!--הטופס-->
            First Name:<input type="text" ng-model="user.name" />
            <br />
            Last Name:<input type="text" ng-model="user.nickName" />
            <br />
            {{user.callMe()}}
        </div>
    </div>
    <script src="Scripts/angular.min.js"></script>
    <script>
        var myapp = angular.module("myapp", []);
        myapp.controller("HelloCtrl", function ($scope) {
            $scope.user = {
                name: "name123",
                nickName: "nickName123",

                callMe: function () {
                    var userObject = $scope.user;
                    return userObject.name + " Known as " + userObject.nickName;
                }
            };
        });
    </script>

【讨论】：