$("button").on("click",function(){
  //提交ajax请求
  $.ajax({
    url:"http://localhost:9999",
    data:{name:'xiaoming',age:19},
    type:"POST",
    dataType:"json",
    async:true,
    timeout:5000,
    complete:function(){
      console.log("end");
    },
    success:function(data,textStatus,jqXHR){
      console.log(data);
      console.log(textStatus);
      console.log(jqXHR);
    },
    error:function(textStatus,jqXHR){
      console.log("error");
      console.log(textStatus);
      console.log(jqXHR);
    }
  });
});

/**
 * New node file
 */

//载入模块
var http = require("http");
function onRequest(req,resp){
  //获取ajax提交的信息
  req.on("data",function(data){
    //打印
    console.log(decodeURIComponent(data));
  });
  //返回response
  resp.writeHead(200,{"ContentType":"text/html;charset=utf-8"});
  //返回响应尾
  resp.end();
}

//创建服务器
http.createServer(onRequest).listen(9999);

name=xiaoming&age=19

/**
 * New node file
 */

//载入模块
var http = require("http");
var qs = require("querystring");
function onRequest(req,resp){
  //获取ajax提交的信息
  var currentData = "";
  req.on("data",function(data){
    //打印
    currentData += data;
    console.log(qs.parse(currentData));
  });
  //返回response
  resp.writeHead(200,{"ContentType":"text/html;charset=utf-8"});
  //返回响应尾
  resp.end();
}

//创建服务器
http.createServer(onRequest).listen(9999);

{ name: 'xiaoming', age: '19' }

var temp = qs.parse(data);
console.log(temp.name);
console.log(temp.age);