Detailed explanation of 3 ajax value transfer methods

The content shared with you in this article is a detailed explanation of the three ajax value transfer methods, which has a certain reference value. Friends in need can refer to it

var data=JSON.stringify({‘name”:name,”sex”:sex});
$.ajax({    
//ajax传值方式：1，url后面直接跟参数（get），2,headers（get）:传值方式。此处传值的时候，需要设置服务端的Access-Control-Allow-Headers中设置对应的参数名，才
//可以在header中加入想要传值的名字。3，body:传值方式（对应post），也就是data:{中间是json字符串/json对象}
                            url: restApiServer+ 'user?name=' + name,  服务端取值：request.query.name
                            type: 'GET',
                            dataType:"json",
                            headers: {"Authorization": "Basic " + Authorization + ":" +password, "code": code, "startIndex":jtParams.jtStartIndex, "pageSize": jtParams.jtPageSize,"sorting": jtParams.jtSorting }, 服务端取值：request.header(“参数名”);
                            data: data,||data:JsonObject,||  data:JsonStr   服务端取值：request.body.参数名，
                            success: function(data) {
                                if(data.success == 1) {
                                   if(data.data.length < 1)
                                        return;
                                    var jsonObj= {
                                       "Result": "OK",
                                       "Records": data.data,
                                       "TotalRecordCount": data.count["FOUND_ROWS()"]
                                    }
                                   $dfd.resolve(jsonObj);
                                }
                                else {
                                    var jsonObj= {
                                       "Result": "ERROR",
                                       "Message": data.error
                                    }
                                    $dfd.resolve(jsonObj);
                                }
                            },error: function (){   $dfd.reject();  }
                        });

1, use When using the express() framework:

Client:
1) The url is directly followed by the parameter (get) Server-side value: request.query.Parameter name, where name is the parameter name
2 ) headers (get/post), when passing the value here, you need to set the corresponding parameter name in Access-Control-Allow-Headers for cross-domain access. Server-side value: request.header('parameter name');
3) body (Post): that is, the middle data (the middle is a Json string/Json object) Server-side value: request.body. Parameter name

2, use koa2() When using the framework

1) The url is directly followed by the parameter (get) Server-side value: ctx.request.query.Parameter name, where name is the parameter name
2) Headers (get/post), When passing values ​​here, there is no need to use headers to register across domains. Server-side value: ctx.request.header. Parameter name;
3) body (Post): which is the middle data (the middle is a Json string/Json object) Server-side value: ctx.request.body. Parameter name

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