AJAX 传值给后台

来自网络，自己测试过；可以用

前台：

 <script type="text/javascript">
             function CSmethod() {
                 $.ajax({ type: "Post",
                     url: "javaTest.aspx/HelloWorld",
                     contentType: "application/json; charset=utf-8",
                     dataType: "json",
                     data: "{days:2}",
                      success:function (data) { alert(data.d); },
                     error: function (err) { alert(err); }
                 });
                }
         </script>

后台：

  [System.Web.Services.WebMethod]

 public static string HelloWorld(Int32 days)
        {
        
           // return "Hello World of CS1";
            return "[{\"nowtime\":\"" + DateTime.Now.AddDays(days).ToShortDateString() + "\"}]";

           
        }

前台发送数组：

<script type="text/javascript">
       function AddNewWork() {
         var js_Arr = new Array(); //定义数组
          js_Arr.push("{ name: '张三', salary: '50' }, { name: '李四', salary: '60' }, { name: '王五', salary: '70' }");
                $.ajax({ type: "Post",
                    url: "MyPage.aspx/AddNewWork",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    data: "{arr_Str:[" + js_Arr + "]}", //传送数组

                    success: function (data) { alert(data.d); },
                    error: function (err) { alert(err); }
                });
            }

后台接收数组

  [System.Web.Services.WebMethod]
        public static ArrayList AddNewWork(Dictionary<string, string>[] arr_Str)
        {     
        // return "Hello World of CS1";
           // return "[{\"nowtime\":\"" + DateTime.Now.AddDays(days).ToShortDateString() + "\"}]";
             ArrayList al = new ArrayList();//创建动态数组       
            al.Add("{张三:'10'}");       
            al.Add("{李四:'20'}");       
            al.Add("{王五:'30'}");     
            al.Add("{赵六:'40'}");      
            return al;//返回动态数组

           
        }

如果要js_Arr是一个数组，那么可以直接使用

data: {"str_Fc_Id": js_Arr}

jQuery会帮助进行序列化。