---
id: fast-element.subscriber.handlechange
title: Subscriber.handleChange() method
hide_title: true
---
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[@microsoft/fast-element](./fast-element.md) &gt; [Subscriber](./fast-element.subscriber.md) &gt; [handleChange](./fast-element.subscriber.handlechange.md)

## Subscriber.handleChange() method

Called when a source this instance has subscribed to changes.

<b>Signature:</b>

```typescript
handleChange(source: any, args: any): void;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  source | any | The source of the change. |
|  args | any | The event args detailing the change that occurred. |

<b>Returns:</b>

void
