Javascript Json Parser

Question

我试图只使用javascript编写一个JSON解析器。我只想使用javascript的原因是，我希望解析Meteor中服务器端的API返回的结果。然而，我在解析它时遇到了困难。下面是返回的JSON：

{
   "R_5N4205x1hhF6pGZ":{
      "ResponseSet":"Default Response Set",
      "Name":"Anonymous",
      "ExternalDataReference":"",
      "EmailAddress":"",
      "Status":"16",
      "StartDate":"2014-01-09 11:19:51",
      "EndDate":"2014-01-09 11:19:56",
      "Finished":"1",
      "Q1":"Hello "
   },
   "R_7mqYPn4rZfNtVif":{
      "ResponseSet":"Default Response Set",
      "Name":"Anonymous",
      "ExternalDataReference":"",
      "EmailAddress":"",
      "Status":"16",
      "StartDate":"2014-01-09 11:21:58",
      "EndDate":"2014-01-09 11:22:05",
      "Finished":"1",
      "Q1":"Name identifier"
   },
   "R_bHs2h06HSQ1h2Qh":{
      "ResponseSet":"Default Response Set",
      "Name":"Anonymous",
      "ExternalDataReference":"",
      "EmailAddress":"",
      "Status":"16",
      "StartDate":"2014-01-09 11:28:24",
      "EndDate":"2014-01-09 11:28:30",
      "Finished":"1",
      "Q1":"Test"
   },
   "R_20rlmxxgGkYnWWF":{
      "ResponseSet":"Default Response Set",
      "Name":"Some, Name",
      "ExternalDataReference":"",
      "EmailAddress":"",
      "Status":"0",
      "StartDate":"2014-01-09 12:21:15",
      "EndDate":"2014-01-09 12:21:27",
      "Finished":"1",
      "Q1":"hjjhhjhj"
   },
   "R_e36yuRbnMmh38dD":{
      "ResponseSet":"Default Response Set",
      "Name":"Anonymous",
      "ExternalDataReference":"",
      "EmailAddress":"",
      "IPAddress":"161.185.153.4",
      "Status":"0",
      "StartDate":"2014-01-09 12:23:04",
      "EndDate":"2014-01-09 12:23:11",
      "Finished":"1",
      "Q1":"hello world "
   }
}

我想用一个对象父键保存每个响应对象，作为“responseID”键:值(即array["responseID"]="R_e36yuRbnMmh38dD)。

  "R_e36yuRbnMmh38dD":{
      "ResponseSet":"Default Response Set",
      "Name":"Anonymous",
      "ExternalDataReference":"",
      "EmailAddress":"",
      "IPAddress":"161.185.153.4",
      "Status":"0",
      "StartDate":"2014-01-09 12:23:04",
      "EndDate":"2014-01-09 12:23:11",
      "Finished":"1",
      "Q1":"hello world "
   }

我想将结果集保存在mongoDb中。

Answer 1

您可以使用NodeJS JSON.parse()函数，但是如果我理解，您希望更多地使用对象中的键创建一个对象。

这是代码，如果您想要这样做的话：

var originalObject;
var resultArray;
for (var key in originalObject) {
   if(originalObject.hasOwnProperty(key )){
     var obj = originalObject[key];
     obj.responseID = key;
     resultArray.push(obj);
   }
}

但你的问题有点让人困惑。对于mongoDB，我建议使用nodejs本地驱动程序

Answer 2

我认为您不是在讨论JSON解析器--您似乎想要转换一些已经解析过的对象，特别是向每个对象添加一个新属性。尽管您的示例没有显示这一点，而且也没有array，所以这是纯粹的猜测。

var responses_map = JSON.parse('{"R_5N4205x1hhF6pGZ": { "ResponseSet": ...');

可以使用Object.keys获取对象成员的字符串。

Object.keys(responses_map).forEach(function(response_id) {
    responses_map[response_id].responseID = response_id;
});

// now responses_map.R_5N4205x1hhF6pGZ.responseID is "R_5N4205x1hhF6pGZ"

(注意:假设是现代的JavaScript --如果您的代码也需要在IE8上运行，则需要使用for response_id in response_map循环而不是Object.keys。)