# String.pad_end

## Function

Pads content at the end of the string to the target length.

## Syntax

```bt
string.pad_end(target_len, pad)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| target_len | Number | Yes | None | Target length. |
| pad | String | No | Space | Pad text. |

## Return value

| Type | Description |
| ------ | ------ |
| String | The new string after filling. |

## Code Example

```bt
result = 'BT'.pad_end(4, '.')

// Output: BT..
print result
```

## Notes

- Return the original string when the current length is greater than or equal to the target length.