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2 changes: 2 additions & 0 deletions content/tutorial/01-svelte/07-lifecycle/03-update/README.md
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title: beforeUpdate and afterUpdate
---

> The Eliza Chatbot in this exercise doesn't currently work. For now, you can use the old tutorial instead: https://svelte.dev/tutorial/update

The `beforeUpdate` function schedules work to happen immediately before the DOM is updated. `afterUpdate` is its counterpart, used for running code once the DOM is in sync with your data.

Together, they're useful for doing things imperatively that are difficult to achieve in a purely state-driven way, like updating the scroll position of an element.
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