# chatter:follow

Renders a button for a user to follow or unfollow a Chatter record. Note that Chatter components are unavailable for Visualforce pages on Force.com sites. Ext JS versions less than 3 should not be included on pages that use this component.

## Attributes

| Attribute Name | Attribute Type | Description                                                                                                                                                                                                                              | Required? | API Version | Access |
| -------------- | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- | ----------- | ------ |
| `entityId`     | id             | Entity ID of the record for which to display the follow or unfollow button; for example, Contact.Id                                                                                                                                      | Yes       | 20.0        |        |
| `id`           | String         | An identifier that allows the component to be referenced by other components in the page.                                                                                                                                                |           | 14.0        | global |
| `onComplete`   | String         | The JavaScript function to call after the follow/unfollow event completes                                                                                                                                                                |           | 20.0        |        |
| `rendered`     | Boolean        | A Boolean value that specifies whether the component is rendered on the page. If not specified, this value defaults to true.                                                                                                             |           | 14.0        | global |
| `reRender`     | Object         | The ID of one or more components that are redrawn when the result of the action method returns to the client. This value can be a single ID, a comma-separated list of IDs, or a merge field expression for a list or collection of IDs. |           | 20.0        |        |

**See Also**

- [chatter:followers](/docs/platform/salesforce-pages-developers-guide/guide/pages-compref-chatter-followers.md)