Javascript Json Parser

I am trying to write a JSON parser using only javascript. The reason I only want to use javascript is that I want to parse the result returned from an API on server side in Meteor.

Solution 1:

You can use NodeJS JSON.parse() function but if I understand you want more create an object with the key in the object.

here is the code, if it is what you want to do :

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

But your question is a bit confusing. for mongoDB, I suggest the nodejs native driver

Solution 2:

I don't think you're talking about a JSON parser - you seem to be saying you want to transform some already-parsed objects, in particular adding a new property to each. Although your example doesn't show that, and there is no array, so this is pure guesswork.

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

You can get the strings of members of an object using Object.keys:

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

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

(nb: assumes modern JavaScript - if your code also needed to run on IE8 you would need to use a for response_id in response_map loop instead of Object.keys.)