> For the complete documentation index, see [llms.txt](https://daseldocs.tomwright.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://daseldocs.tomwright.me/v1/selectors/next-available-index.md).

# Next Available Index

## Description

The next available index selector allows you to target the next available index of an array.

You can think of this as appending to a list.

## Usage

{% hint style="info" %}
This is only available in [put](/v1/usage/put.md) commands.
{% endhint %}

```shell
.[]
```

## Example

```shell
$ echo '{"x": [1, 2]}' | dasel put int -p json '.x.[]' 3
{
  "x": [
    1,
    2,
    3
  ]
}
```