Asynchronous loading data using ajax

Asynchronous loading data using ajax

1. controller assigned to User

   @RequestMapping("/a2")
   public List<User> a2() {
       List<User> userlist = new ArrayList<User>();
       userlist.add(new User("大头儿子", 6, "男"));
       userlist.add(new User("小头爸爸", 30, "男"));
       userlist.add(new User("老王", 45, "男"));
       return userlist;
   }

2. button和table

   <input type="button" id="btn" value="加载数据">
   <table>
       <thead>
       <tr>
           <td>姓名</td>
           <td>年龄</td>
           <td>性别</td>
       </tr>
       </thead>
       <tbody id="content">
       </tbody>
   </table>

3. jQuery Import and function

   <script src="${pageContext.request.contextPath}/statics/js/jquery-3.4.1.js"></script>
   <script>
       $(function () {
           $("#btn").click(function () {
               $.post("${pageContext.request.contextPath}/a2", function (data) {
                   //console.log(data);
                   var html = "<>";
   
                   for (let i = 0; i < data.length; i++) {
                       html += "<tr>" +
                           "<td>" + data[i].name + "</td>" +
                           "<td>" + data[i].age + "</td>" +
                           "<td>" + data[i].sex + "</td>" +
                           "</tr>"
                   }
                   $("#content").html(html);
               })
           })
       })
   </script>

4. Results page