Using For Loop with JSON

Question

I have a JSON object below and there are multiple nested divisions, the first without any identifiers. I am trying to get to the teams within the last divisions using a for loop, but I am not able to access them. Need some guidance.

{
    "division": {
        "division": [
            {
                "team": {
                    "id": "229525",
                    "name": "MyTeam",
                    "photo": "",
                    "visible": "True",
                    "RosterView": "True",
                    "PublicResults": "True",
                    "Statistics": "False",
                    "privilege": [
                        "False",
                        "True",
                        "True",
                        "True",
                        "True",
                        "True",
                        "True"
                    ]
                },
                "name": "Boys 9-10",
                "id": "12897",
                "sort": "0",
                "open": "0"
            },
            {
                "team": [
                    {
                        "id": "229523",
                        "name": "Cougars",
                        "photo": "",
                        "visible": "True",
                        "RosterView": "True",
                        "PublicResults": "True",
                        "Statistics": "False",
                        "privilege": [
                            "False",
                            "True",
                            "True",
                            "True",
                            "True",
                            "True",
                            "True"
                        ]
                    },

Answer 1

Update: Hmmm, after reading your JSON carefully, I notice that the 1st division has only 1 team since the team has only one object. But seems like the 2nd division has more than 1 team since there is an array of objects in team. I guess you have to handle the case where there only one team in a division.

Your for loop was almost right. Try this:

var divisions = JSONObject.division.division;

for (var i=0; i < divisions.length; i++) {
    // handle division of one team here,
    // don't need for loop if there only one team
    // just do division[i].team.id
    for (var j=0; j < divisions[i].length; j++) {
        var teamId = divisions[i].team[j].id;
        alert(teamId);
    }
}

Your loop was

for (i=0; i <= JSONObject.division.division.teams[i].length; i++) { }

It has 2 problems, first you are skipping the last element by doing i <= ...length; i++ second, JSONObject.division.division.teams[i] is not an array, but this one JSONObject.division.division[i].team will give you an array of all the teams in a division. Then you can just get the team you want by its index in the array :)

Answer 2

First you should fix your parenthesis in json.

var a = {
    "division": {
        "division": [
            {
                "team": {
                    "id": "229525",
                    "name": "MyTeam",
                    "photo": "",
                    "visible": "True",
                    "RosterView": "True",
                    "PublicResults": "True",
                    "Statistics": "False",
                    "privilege": [
                        "False",
                        "True",
                        "True",
                        "True",
                        "True",
                        "True",
                        "True"
                    ]
                },
                "name": "Boys 9-10",
                "id": "12897",
                "sort": "0",
                "open": "0"
            },
            {
                "team": [
                    {
                        "id": "229523",
                        "name": "Cougars",
                        "photo": "",
                        "visible": "True",
                        "RosterView": "True",
                        "PublicResults": "True",
                        "Statistics": "False",
                        "privilege": [
                            "False",
                            "True",
                            "True",
                            "True",
                            "True",
                            "True",
                            "True"
                        ]
                    }
                   ]
           }
        ]
    }
}

Then you can reach second 'team' object with:

a['division']['division'][1]['team'][0]['id'];

This will give you id. You can select anything you want. It is not so complicated. Just read it like a puzzle.

Here is live example: JSFiddle

here are some for loops :

var json1 = a['division']['division'][1]['team'][0]; // this is for second team array,
    json2 = a['division']['division'][0]['team']; // this is for first team object,

for (obj in json1){
    return json[obj];
};

According to your json, first and second teams are not in same data type. first team is array but second one is object. Thats why there are two different variables.