# web.cookie

## Function

Read the request Cookie object, and also write back the Cookie status after the request is completed.

## Syntax

```bt
web.cookie
```

## Parameters

No parameters.

## Return value

| Type | Description |
| ------ | ------ |
| Object | Returns the request cookie key value object and writes back the status as the response cookie. |

## Object structure

| Field | Type | Description |
| ------ | ------ | ------ |
| Any cookie name | String | The string value of the request cookie. The read result is Empty when the cookie does not exist. |

## Example

```bt
// Cookie: sid=abc
result = web.cookie.sid

// Output: abc
print result
```

## Notes

- After the script modifies web.cookie, the response cookie will be written back at the end of the request.
- Adding or modifying fields will write back the cookie with the same name.
- After deleting the existing Cookie field in the request, the cookie will expire at the end of the request.