无法从Angular.js中的控制器获取数据

Unable to fetch data from controller in Angular.js

本文关键字：控制器 获取 数据 js Angular      更新时间：2023-11-17

我是AngularJS的新手。事实上，这是我的第一天。我在这里要做的是从我制作的控制器中获取数据，并将其显示在视图中。但我不知道为什么，这不是简单的工作。

我的数据是学生名单。我所要做的就是按列表顺序显示学生列表，并根据文本框中输入的姓名过滤列表。

我的代码很简单：

<!DOCTYPE html>
<html ng-app>
  <head>
    <script  src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.0/angular.js"></script>
  </head>
  <body>
    <h1>Hello!</h1>
      Student Name:
     <br />
      <input type="text" ng-model="sname" /> {{ sname }} 
    <div id="mvvm_communication" class="container" data-ng-controller="simpleController">
      <ul>
        <li ng-repeat="stud in students | filter:sname  | orderBy:'firstname'" >{{stud.firstname | lowercase }}, {{stud.lastname| uppercase }}</li>
      </ul>
    </div>
    <script>
      function simpleController($scope)
      {
        $scope.students=[
               {firstname:'Jordan',lastname:'Rains'},
               {firstname:'Michael',lastname:'Jordan'},
               {firstname:'John',lastname:'Doe'},
               {firstname:'John',lastname:'Smith'},
               {firstname:'Simcha',lastname:'Michelle'},
               {firstname:'Sydney',lastname:'Rivers'},
               {firstname:'Summer',lastname:'Rose'},
               {firstname:'Georgia',lastname:'Schubert'},
               {firstname:'Rosalie',lastname:'Fayadh'}
              ];
      }      
    </script>    
  </body>
</html>

这是一把小提琴。

您需要注册您的控制器！

var myApp = angular.module('myApp',[]);
myApp.controller('simpleController', ['$scope', simpleController]);

然后您还需要在ng-app中输入一个名称。

<html ng-app="myApp">

我已经更新了您的JSFiddle:

HTML:

<div ng-app="app">
  <div ng-controller="simpleController">
    <h1>Hello Student!</h1>   Student Name:<br/>
    <input type="text" ng-model="sname" /> {{ sname }} 
    <div id="mvvm_communication" class="container">
      <ul>
        <li ng-repeat="stud in students | filter:sname  | orderBy:'firstname'" >{{stud.firstname | lowercase }}, {{stud.lastname| uppercase }}</li>
      </ul>
    </div>
  </div>
</div>

角度：

var app = angular.module('app', []);

app.controller('simpleController', function($scope) {
        $scope.students=[
               {firstname:'Jordan',lastname:'Rains'},
               {firstname:'Michael',lastname:'Jordan'},
               {firstname:'John',lastname:'Doe'},
               {firstname:'John',lastname:'Smith'},
               {firstname:'Simcha',lastname:'Michelle'},
               {firstname:'Sydney',lastname:'Rivers'},
               {firstname:'Summer',lastname:'Rose'},
               {firstname:'Georgia',lastname:'Schubert'},
               {firstname:'Rosalie',lastname:'Fayadh'}
              ]; 
});

您需要定义一个角度模块：

      angular.module('app', []).controller('simpleController', simpleController);

请参阅jsFiddle

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