Insert data to json from variable

Question

I use the following code for inserting data to json:

categories: [
                'Tokyo',
                'Jakarta',
                'New York',
                'Seoul',
                'Manila',
                'Mumbai',
                'Sao Paulo',
                'Mexico City',
                'Dehli',
                'Osaka',
                'Cairo',
                'Kolkata',
                'Los Angeles',
                'Shanghai',
                'Moscow',
                'Beijing',
                'Buenos Aires',
                'Guangzhou',
                'Shenzhen',
                'Istanbul'
            ],

It works, but, i want to put this data into an array or string variable like this:

var data = Array('Tokyo',
                'Jakarta',
                'New York',
                'Seoul',
                'Manila',
                'Mumbai',
                'Sao Paulo',
                'Mexico City',
                'Dehli',
                'Osaka',
                'Cairo',
                'Kolkata',
                'Los Angeles',
                'Shanghai',
                'Moscow',
                'Beijing',
                'Buenos Aires',
                'Guangzhou',
                'Shenzhen',
                'Istanbul');
categories: [data],

But, It does not work. Can you help me ? Thanks.

And categories : data (without the []) does not work?

Samuel Caillerie
– Samuel Caillerie

2012-12-10 10:02:30 +00:00
Commented Dec 10, 2012 at 10:02 — Samuel Caillerie
– Samuel Caillerie, Commented Dec 10, 2012 at 10:02
ooops, yes that's right, thanks

maxoya
– maxoya

2012-12-10 10:04:40 +00:00
Commented Dec 10, 2012 at 10:04 — maxoya
– maxoya, Commented Dec 10, 2012 at 10:04
Is this just that which was your error?

Samuel Caillerie
– Samuel Caillerie

2012-12-10 10:16:56 +00:00
Commented Dec 10, 2012 at 10:16 — Samuel Caillerie
– Samuel Caillerie, Commented Dec 10, 2012 at 10:16
this code was worked: categories: [data],

maxoya
– maxoya

2012-12-10 10:35:57 +00:00
Commented Dec 10, 2012 at 10:35 — maxoya
– maxoya, Commented Dec 10, 2012 at 10:35

hereandnow78 · Accepted Answer · 2012-12-10 10:16:57Z

1

data: ['Tokyo', 'Jakarta',...]

is already an array which is part of an object. if you want it as separate variable just create it like this:

var data = ['Tokyo', 'Jakarta',...];

and add it to your object

var yourObject = {categories: data};

you could even do stuff like this:

var yourObject = {categories: new Array('Tokyo', ...)};

but please use the bracket notation

hint: you are creating an "object literal" not a JSON-Object. JSON is just a subset of the object literal. read more here

edited Dec 10, 2012 at 10:16

answered Dec 10, 2012 at 10:04

hereandnow78

14.5k8 gold badges46 silver badges49 bronze badges

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

Comments

Akhil Sekharan · Accepted Answer · 2012-12-10 10:05:31Z

1

It should be

var data = ['Tokyo','Jakarta','New York','Seoul','Manila','Mumbai','Sao Paulo','Mexico City','Dehli','Osaka','Cairo','Kolkata','Los Angeles','Shanghai','Moscow','Beijing','Buenos Aires','Guangzhou','Shenzhen','Istanbul'];

answered Dec 10, 2012 at 10:05

Akhil Sekharan

12.7k8 gold badges43 silver badges58 bronze badges

Comments

Taai · Accepted Answer · 2012-12-10 10:04:44Z

0

var categories = [];

var data = ['Tokyo',
            'Jakarta',
            'New York',
            'Seoul',
            'Manila',
            'Mumbai',
            'Sao Paulo',
            'Mexico City',
            'Dehli',
            'Osaka',
            'Cairo',
            'Kolkata',
            'Los Angeles',
            'Shanghai',
            'Moscow',
            'Beijing',
            'Buenos Aires',
            'Guangzhou',
            'Shenzhen',
            'Istanbul'];

for (var i = 0; i < data.length; i++) {
  categories.push(data[i]);
}

answered Dec 10, 2012 at 10:04

Taai

2,9201 gold badge18 silver badges13 bronze badges

1 Comment

Taai Over a year ago

@hereandnow78 Excuse me, but the question wasn't that clear either!

Chris · Accepted Answer · 2012-12-10 10:08:38Z

0

The answer is that the first part which works is exactly what you described in the second part. So it already works.

Assigning a variable like this:

categories : ['firstElement', 'secondElement'];

makes the json-field categories containing an Array object. You can access 'firstElement' by using categories[0] for example.

is exactly the same like:

var categoties = new Array();
categories.push('firstElement');
categories.push('secondElement');

your second attempt does not work because you can't supply your array values in the constructor new Array(...). If you instantiate it with new Array() you can use .push('value') to add Elements to the array.

edited Dec 10, 2012 at 10:08

answered Dec 10, 2012 at 10:02

Chris

7,8248 gold badges54 silver badges103 bronze badges

1 Comment

Samuel Caillerie Over a year ago

I think that the OP just want to have the array initialized in another part of his code and call it in his JSON object...

Collectives™ on Stack Overflow

Insert data to json from variable

4 Answers 4

Comments

Comments

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related