---
id: fast-foundation.listboxoption.initialvaluechanged
title: ListboxOption.initialValueChanged() method
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [ListboxOption](./fast-foundation.listboxoption.md) &gt; [initialValueChanged](./fast-foundation.listboxoption.initialvaluechanged.md)

## ListboxOption.initialValueChanged() method

<b>Signature:</b>

```typescript
initialValueChanged(previous: string, next: string): void;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  previous | string |  |
|  next | string |  |

<b>Returns:</b>

void
