Get an item of array in javascript

Question

I have a function, who works fine, but when success i get data, and this data is an array.

success: function(data) {
console.log(data);
}

this data return :

{"idResultat":172825,"idClientCat":1,"idClientLegende":"Tiers L\u00e9gitime","couleurCat":"#0062bd","couleurText":"#FFF"}

But when i try to get for example 'couleurCat', i have undefined. I have try like this :

data['couleurCat']
data.couleurCat

but always undefined

jsbin.com/tiyedozedi/1/edit?js,console — It works fine when I test it. Try providing a real minimal reproducible example instead of fragments of disconnected code. — Quentin
– Quentin, Commented May 18, 2017 at 10:09
Looks like data is a string, convert it to an object before retrieving. — Teemu
– Teemu, Commented May 18, 2017 at 10:09
Could you post a larger example of what you are doing? I suspect you are accessing data before it is available. — squgeim
– squgeim, Commented May 18, 2017 at 10:10
Console.log doesn't always log the object as it is at the moment of the log. try logging Object.keys(data) to see which keys are defined at that moment — Sam Coutteau
– Sam Coutteau, Commented May 18, 2017 at 10:11

Koby Douek · Accepted Answer · 2017-05-18 10:13:48Z

1

You need to restructure your string as JSON before you can access elements. To access the JSON object in JavaScript, parse it with JSON.parse(), and access it via . or [].

In your case, try using:

 JSON.parse(data).couleurCat;

edited May 18, 2017 at 10:13

answered May 18, 2017 at 10:10

Koby Douek

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3 Comments

SpoonMeiser Over a year ago

I suspect that this is the right answer, but it needs expanding. I don't know why it's been downvoted.

Koby Douek Over a year ago

@SpoonMeiser Added some explenations.

Koby Douek Over a year ago

@SpoonMeiser Don't know why the downvote too... Thanks anyway.

Anantha Padmanaban · Accepted Answer · 2017-05-18 10:12:39Z

1

.Try to parse the string JSON.parse(data) and try to access it.

code

 data= JSON.parse(data)
 data['couleurCat']

answered May 18, 2017 at 10:12

Anantha Padmanaban

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Comments

Temp O'rary · Accepted Answer · 2017-05-18 10:17:04Z

0

You said "but when success i get data, and this data is an array." So you should be trying

data[0].couleurCat

You will have to specify the index of array then access the property.

edited May 18, 2017 at 10:17

answered May 18, 2017 at 10:14

Temp O'rary

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1 Comment

Nair Athul Over a year ago

I think he is not getting an array.

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