# Create a JSON

## Overview

This procedure creates an empty JSON object (represented as `{}`). This is useful as a starting point for building up a JSON structure by adding fields one at a time. The empty JSON object can then be assigned to a fact and populated with data.

## Input

This procedure has no input concepts.

## Output

| Concept | Description               |
| ------- | ------------------------- |
| json    | An empty JSON object `{}` |

## Examples

### 1. Creating a simple empty JSON

This example creates an empty JSON object `{}`.

```kog
create a json
```

### 2. Creating and using an empty JSON

This example creates an empty JSON object and assigns it to a fact called "request".

```kog
create a json
use the above as the request
the request
```

### 3. Creating and populating a JSON object

This example creates an empty JSON and then populates it with three fields: name, age, and company.

```kog
create a empty json
use the above as json1
set the json1's name to "kalpesh"
set the json1's age to 28
set the json1's company to "Kognitos"
```

### 4. Creating multiple JSON objects

This example creates another empty JSON object with a different fact name and populates it with company and address fields.

```kog
create an empty json
use the above as json2
set the json2's company to "XYZ"
set the json2's address to "Bangalore"
```

### 5. Creating JSON for nested structures

This example creates multiple JSON objects and nests one within another. The result would be: `{"data": {"age": "23"}}`

```kog
the internaljson is "{}"
the internaljson is a json
set the internaljson's age to "23"
the finaljson is "{}"
get the finaljson as a json
the finaljson is a json
set the finaljson's data to the internaljson
```

### 6. Creating JSON for use with merge operations

This example creates an empty JSON object that will be used to merge or combine data from other sources.

```kog
create an empty json
use the above as the main json
set the main json's "attachment" to the attachment json
```