AngularJS Ajax

AngularJS提供了$http控制器，作为一种从服务器读取数据的服务。服务器通过数据库调用来获取所需的记录。AngularJS需要数据以JSON格式呈现。一旦数据准备好了，可以使用$http以以下方式从服务器获取数据：

function studentController(scope,https:) {
   var url = "data.txt";

   https:.get(url).success( function(response) {scope.students = response; 
   });
}

在这里，文件data.txt包含学生记录。$http服务发起一个ajax调用，并将响应设置为其属性students。可以使用students模型在HTML中绘制表格。

示例

data.txt

[
   {
      "Name" : "Mahesh Parashar",
      "RollNo" : 101,
      "Percentage" : "80%"
   },
   {
      "Name" : "Dinkar Kad",
      "RollNo" : 201,
      "Percentage" : "70%"
   },
   {
      "Name" : "Robert",
      "RollNo" : 191,
      "Percentage" : "75%"
   },
   {
      "Name" : "Julian Joe",
      "RollNo" : 111,
      "Percentage" : "77%"
   }
]

testAngularJS.htm

<html>
   <head>
      <title>Angular JS Includes</title>

      <style>
         table, th , td {
            border: 1px solid grey;
            border-collapse: collapse;
            padding: 5px;
         }
         table tr:nth-child(odd) {
            background-color: #f2f2f2;
         }
         table tr:nth-child(even) {
            background-color: #ffffff;
         }
      </style>
   </head>

   <body>
      <h2>AngularJS Sample Application</h2>
      <div ng-app = "" ng-controller = "studentController">

         <table>
            <tr>
               <th>Name</th>
               <th>Roll No</th>
               <th>Percentage</th>
            </tr>

            <tr ng-repeat = "student in students">
               <td>{{ student.Name }}</td>
               <td>{{ student.RollNo }}</td>
               <td>{{ student.Percentage }}</td>
            </tr>
         </table>
      </div>

      <script>
         function studentController(scope,http) {
            var url = "/data.txt";

            http.get(url).then( function(response) {scope.students = response.data;
            });
         }
      </script>

      <script src = "https://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js">
      </script>

   </body>
</html>