javascript - 如何使用nodejs读取请求中的动态json

Question

我在 nodejs 的 post 中得到这样的 json:

{  
   "action":"4",
   "enter":{  
      "login":"loginname"
   },
   "data_1":{  
      "order":"0",
      "time":"19:12:10 2017-07-05",
      "message":"Loop 0",
      "type":"test_type"
   },
   "data_2":{  
      "order":"1",
      "time":"19:12:11 2017-07-05",
      "message":"Loop 1",
      "type":"test_type"
   },
   "data_3":{  
      "order":"2",
      "time":"19:12:11 2017-07-05",
      "message":"Loop 2",
      "type":"test_type"
   }
}

有一个 data Node ，如何迭代(动态)所有 data Node 并打印 message？

感谢您的帮助。

Answer 1

解决方案在这里 https://jsfiddle.net/6gze9occ/

var data = {  
  "action":"4",
  "enter":{  
  "login":"loginname"
 },
 "data_1":{  
  "order":"0",
  "time":"19:12:10 2017-07-05",
  "message":"Loop 0",
  "type":"test_type"
 },
 "data_2":{  
  "order":"1",
  "time":"19:12:11 2017-07-05",
  "message":"Loop 1",
  "type":"test_type"
 },
 "data_3":{  
  "order":"2",
  "time":"19:12:11 2017-07-05",
  "message":"Loop 2",
  "type":"test_type"
 }
};

var keys = Object.keys(data);

for(var i=0; i<keys.length; i++){
   if(typeof data[keys[i]]["message"] !== 'undefined')
       console.log(data[keys[i]]["message"]);
}