***

title: Hooks
order: 60
---------

A **hook** is a lifecycle event. The available hooks are:

*   [preRender](/reference/hooks/prerender/): Called at the start of [`Pattern.render()`](/reference/api/pattern#render)
*   [postRender](/reference/hooks/postrender/): Called at the end of [`Pattern.render()`](/reference/api/pattern#render)
*   [insertText](/reference/hooks/inserttext/): Called when inserting text
*   [preDraft](/reference/hooks/predraft/): Called at the start of [`Pattern.draft()`](/reference/api/pattern#draft)
*   [postDraft](/reference/hooks/postdraft/): Called at the end of [`Pattern.draft()`](/reference/api/pattern#draft)
*   [preSample](/reference/hooks/presample/): Called at the start of [`Pattern.sample()`](/reference/api/pattern#sample)
*   [postSample](/reference/hooks/postsample/): Called at the end of [`Pattern.sample()`](/reference/api/pattern#sample)

You can register a method for a hook. When the hook is triggered, your method will be
called. It will receive two parameters:

*   An object relevant to the hook. See the [hooks API reference](/reference/hooks/) for details.
*   Data passed when the hook was registered (optional)