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matthewp merged 1 commit into from
Oct 5, 2026
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Docs: clarify actions vs. reduce #274

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2 changes: 2 additions & 0 deletions docs/src/content/docs/action.md
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Expand Up @@ -9,6 +9,8 @@ section: api

__action__ takes a function that will be run during a [transition](/docs/transition/). The primary purpose of using action is to perform *side-effects*.

The function receives the current [context](/docs/createMachine/#context) and the event. Its return value is ignored and the context passes through unchanged. To update the context, use [reduce](/docs/reduce/) instead.

This example triggers an event on an element when transitioning to the next state.

```js
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