Parsing JSON data with JavaScript

I'm currently working with this JSON data, attempting to extract all the keys and values. The challenge I'm facing is that some of these keys contain inner objects with additional key-value pairs.

Is it possible to achieve this recursively using JavaScript exclusively? What am I overlooking?

{
  "@xmlns:v6": "urn://oracle.bi.webservices/v6",
  "v6:pageID": "?",
  "v6:reportID": "?",
  "v6:report": {
    "v6:reportPath": "?",
    "v6:reportXml": "?"
  },
  "v6:reportViewName": "?",
  "v6:reportParams": {
    "comment": [
      "Zero or more repetitions: ",
      "Zero or more repetitions: ",
      "Zero or more repetitions: ",
      "Zero or more repetitions: ",
      "Optional: "
    ],
    "v6:filterExpressions": "?",
    "v6:variables": {
      "v6:name": "?",
      "v6:value": "?"
    },
    "v6:nameValues": {
      "v6:name": "?",
      "v6:value": "?"
    },
    "v6:templateInfos": {
      "v6:templateForEach": "?",
      "v6:templateIterator": "?",
      "comment": "Zero or more repetitions: ",
      "v6:instance": {
        "v6:instanceName": "?",
        "comment": "Zero or more repetitions: ",
        "v6:nameValues": {
          "v6:name": "?",
          "v6:value": "?"
        }
      }
    },
    "v6:viewName": "?"
  },
  "v6:options": {
    "v6:enableDelayLoading": "?",
    "v6:linkMode": "?"
  },
  "v6:sessionID": "?"
}

It's worth mentioning the code snippet that I'm currently trying to work through:

    function parse(data,child,parent){
    var nextRept = false;
        if(child){  
        for(var i = 0; i < tmp.parents.length ; i++){
            if(tmp.parents[i].name == parent){
                if(!tmp.parents[i].children)
                    tmp.parents[i].children = [];
                var keys = Object.keys(data);
                for (var k = 0; k < keys.length; k++) {
                var val = data[keys[k]];
                if(typeof val === 'object')
                {
                 tmp.parents.push({name: keys[k].replace("v6:","")} ); //adding the parent
                 parse(val,true,keys[k].replace("v6:","")); // adding children recursively 
                }
                if(val == '?')
                { // handle valid param
                    var attr = false;
                    if(keys[k].indexOf('@') == 0){
                        attr = true;
                        keys[k] = keys[k].replace("@","");
                    }
                    tmp.parents[i].children.push({name: keys[k].replace("v6:","") , value : val , isAttr : attr , isRepet : nextRept});
                    isRepet = false;
                }
                }
                return;
            }

        }
            return;
        }

        var keys = Object.keys(data);
        for (var i = 0; i < keys.length; i++) {
            var val = data[keys[i]];
            if(typeof val === 'object')
                {
                 tmp.parents.push({name: keys[i].replace("v6:","")} ); //adding the parent
                 parse(val,true,keys[i].replace("v6:","")); // adding children recursively 
                }
                else{

                if(val.indexOf('Zero or more repetitions') != -1){
                    nextRept = true;
                    continue;
                }
                if(val == '?')
                { // handle valid param
                    var attr = false;
                    if(keys[i].indexOf('@') == 0){
                        attr = "true";
                        keys[i] = keys[i].replace("@","");
                    }
                    else{
                        attr = false;
                    }
                    tmp.parents.push({name: keys[i].replace("v6:","").replace("@","") , value : val , isAttr : attr , isRepet : nextRept});
                    isRepet = false;
                }


                }
            }

    };
javascriptjsonparsingrecursion

Answer №1

This solution was put together quickly, but it should be effective for handling iteration through objects, arrays, and strings.

var obj = {
    "item":     "value",
    "item2":    ["value1","value2","value3"],
    "item3":    {"item3-1": ["item3-1-1", "item3-1-2", "item3-1-3"], "item3-2": {"morestuff": ["morestuff1", "morestuff2","morestuff3"]}}
}

function parseObject(obj){
    for (var key in obj) {
      if (obj.hasOwnProperty(key)) {
        var item    = obj[key];
        if(typeof item == 'string'){
            console.log(key + ' -> ' + obj[key]);
        }else{
            console.log(key + ' -> ');
            parseObject(item);
        }
      }
    }
}

parseObject(obj);

Output:

item -> value
item2 ->
0 -> value1
1 -> value2
2 -> value3
item3 ->
item3-1 ->
0 -> item3-1-1
1 -> item3-1-2
2 -> item3-1-3
item3-2 ->
morestuff ->
0 -> morestuff1
1 -> morestuff2
2 -> morestuff3

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