---
title: useResizeObserver
description: "`useResizeObserver` is a custom hook that tracks changes in the size and position of an element."
links:
  - source: https://github.com/yamada-ui/yamada-ui/tree/main/packages/react/src/hooks/use-resize-observer
  - storybook: https://yamada-ui.github.io/yamada-ui?path=/story/hooks-useresizeobserver--basic
---

```tsx
const [flg, { toggle }] = useBoolean()
const [ref, rect] = useResizeObserver<HTMLButtonElement>()

return (
  <VStack>
    <Text>{JSON.stringify(rect)}</Text>

    <Center
      bg="bg.contrast"
      color="fg.contrast"
      ref={ref}
      boxSize={flg ? "xs" : "3xs"}
      maxW="full"
      onClick={toggle}
    >
      Click me
    </Center>
  </VStack>
)
```

## Usage

```tsx
import { useResizeObserver } from "@yamada-ui/react"
```

```tsx
import { useResizeObserver } from "@/components/ui"
```

```tsx
import { useResizeObserver } from "@workspaces/ui"
```

```tsx
const [ref, rect] = useResizeObserver<HTMLButtonElement>()
```