Constructing json object using javascript

Question

I am facing issues while constructing an object using javascript. I want this:

{
    "p_id": "2",
    "p_name": "weblogic",
    "ip_list": [
        {
            "ip_id": 2690
        },
        {
            "ip_id": 2692
        },
        {
            "ip_id": 2693
        }
    ]
}

Below is the javascript code that I am using to get the data into the object:

var ipArray = [];
secTagJSON.p_name = "weblogic";
secTagJSON.p_id = "2";
for (var index=0; index < selectedArray.length; index++){
    secTagJSON.ip_list.push("ip_id": selectedArray[index]);
}

I am able to construct the properties for p_id and p_name but struggling to create the the ip_list. Please let me know how to get this constructed using javascript.

Code for posting to the server:

var ipArray = [];
secTagJSON.p_name = "weblogic";
secTagJSON.p_id = 2;
for (var index=0; index < selectedArray.length; index++){
 secTagJSON.ip_list.push({"ip_id": selectedArray[index]});
}
console.log (secTagJSON);
console.log (JSON.stringify(secTagJSON));
 $http.post("http://server:port/api/v1/tags").
    success(function(data) {
      console.log (data)
    });

What you just posted is a valid way to construct it using Javascript. — Paul
– Paul, Commented Mar 27, 2014 at 18:02
Hmmm . What you mean by constructing ? ... because i suspect that something is terribly wrong by your words — SergeS
– SergeS, Commented Mar 27, 2014 at 18:03
Please find the below code that I have written to construct the json message: var ipArray = []; secTagJSON.p_name = "weblogic"; secTagJSON.p_id = "2"; for (var index=0; index < selectedArray.length; index++){ secTagJSON.ip_list.push("ip_id": selectedArray[index]); } But I am not getting in the desired format as mentioned in my question — Pradeep
– Pradeep, Commented Mar 27, 2014 at 18:05

Walter Macambira · Accepted Answer · 2014-03-27 18:24:47Z

1

Simply do this:

var obj = { ip_list: [] };

obj.p_name = "weblogic";
obj.p_id = "2";

for (var i = 0, j = selectedArray.length; i < j; i++)
   obj.ip_list.push({ ip_id: selectedArray[i] });

Note that your ip_list is actually an array of objects. So, when you iterate over it, remember that each var item = json.ip_list[i] will return an object, that you can access its properties using: item['ip_id'].

Note that obj is an Javascript object, it is not an JSON. If you want the JSON, you can use JSON.stringify(obj). This will return your JSON (string).

Hope I've helped.

edited Mar 27, 2014 at 18:24

answered Mar 27, 2014 at 18:12

Walter Macambira

2,61521 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Pradeep Over a year ago

Yes. I got it working now but when I am trying to post the json to the server, I am getting 415 (Unsupported Media Type) error. Could you please let me know what I am missing?

Walter Macambira Over a year ago

How are you sending it? Did you set the contentType? And if you did, is your server expecting JSON format? I edited my answer telling you that if you wnat to send the JSON, you need to serialize your javascript object.

bluetoft · Accepted Answer · 2014-03-27 21:04:43Z

1

Try:

secTagJSON.p_name = "weblogic";
secTagJSON.p_id = "2";
secTagJSON.ip_list = [];
for (var index=0; index < selectedArray.length; index++){
 secTagJSON.ip_list.push({"ip_id": selectedArray[index]});
}

you forgot your {} around "ip_id": etc... You also need to declare that ip_list is an array. Your ip_list is an array of objects. I would guess that your script was not running as it was.

Posting to your server you should use:

$http.post('server:port/api/v1/tags', secTagJSON).sucess(...

edited Mar 27, 2014 at 21:04

answered Mar 27, 2014 at 18:10

bluetoft

5,4432 gold badges25 silver badges27 bronze badges

3 Comments

Pradeep Over a year ago

Thanks. It worked but when I am trying to post the json I am getting 415 error - 415 (Unsupported Media Type). Can you please let me know where I am going wrong?

Pradeep Over a year ago

I have added the code to post to the server in my question. I am using AngularJs for http post calls.

bluetoft Over a year ago

@user883561 It looks like you're not actually sending the data... so the content type is not getting set by i'm guessing Angular... try $http.post('server:port/api/v1/tags', secTagJSON).sucess(...

Collectives™ on Stack Overflow

Constructing json object using javascript

2 Answers 2

2 Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related