Get JSON key name

Question

I have the following JSON data: {"success":"You are welcome"} that I have named json in my JavaScript code.

When I want to alert You are welcome I do json.success. So now the problem I am facing is that, what about if I want to alert success. Is there any way to get it?

please show the code. – Jagdish Idhate Jul 15 '16 at 13:55 — Jagdish Idhate, Jul 15 '16 at 13:55

score 99 · Accepted Answer · edited Jul 03 '18 at 21:11

99

So now the problem I am facing is that, what about if I want to alert success. Is there a need way to get it ?

If your object is

var obj = {"success":"You are welcome"};

You can get the array of keys as

var keys = Object.keys(obj);

and then print it as

console.log( keys[ 0 ] ); //or console.log( keys.join(",") )

var obj = {"success":"You are welcome"};
var keys = Object.keys(obj);
console.log(keys[0]);

edited Jul 03 '18 at 21:11

Nicholas Smith

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answered Jul 15 '16 at 13:55

gurvinder372

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you saved me alot – Aishwarya Jan 21 '19 at 10:17

score 7 · Answer 2 · answered Jul 15 '16 at 13:56

7

You mean something like this?

keys = Object.keys(json_object)
key_to_use = keys[0];

answered Jul 15 '16 at 13:56

CyberBrain

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score 7 · Answer 3 · edited Jul 15 '16 at 13:58

7

Try this code

alert(Object.keys({"success":"You are welcome"})[0]);

edited Jul 15 '16 at 13:58

Kalu Singh Rao

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answered Jul 15 '16 at 13:56

The Internet

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score 4 · Answer 4 · answered Jul 15 '16 at 13:56

Since you're able to do json.success, you don't have "JSON data", you have a Javascript Object. JSON, or JavaScript Object Notation, is no more than the serialization of a Javascript object.

As other answers have stated, you can use Object.keys() to list the fields of an object.

score 3 · Answer 5 · answered Jul 15 '16 at 13:55

3

Object.keys() can be called on any JavaScript object to get back a list of keys.

answered Jul 15 '16 at 13:55

arjabbar

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Get JSON key name

5 Answers5

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