# nlohmann::json_document

Defined in header `<nlohmann/json_view.hpp>`

```
using json_document = basic_json_document<json>;
```

This type is a [`basic_json_document`](https://json.nlohmann.me/api/basic_json_document/index.md) of the default [`json`](https://json.nlohmann.me/api/json/index.md) specialization.

## Examples

Example

The example below demonstrates how to use the type `nlohmann::json_document`.

```
#include <iostream>
#include <nlohmann/json_view.hpp>

using json_document = nlohmann::json_document;

int main()
{
    std::cout << std::boolalpha;

    // json_document is basic_json_document<nlohmann::json>: same value types
    // and containers as the ordinary json specialization
    json_document doc = json_document::parse(R"({"pi": 3.14, "numbers": [1, 2, 3]})");

    std::cout << doc.root().is_object() << '\n';
    std::cout << doc.root().materialize().dump() << '\n';
}
```

Output:

```
true
{"numbers":[1,2,3],"pi":3.14}
```

## See also

- [json_view](https://json.nlohmann.me/api/json_view/index.md) - a view of a value of a `json_document`
- [ordered_json_document](https://json.nlohmann.me/api/ordered_json_document/index.md) - the corresponding document for `ordered_json`

## Version history

Since version 3.13.0 unreleased.