---
title: useMergeRefs
package: '@chakra-ui/hooks'
description: 'React hook that merges react refs into a single memoized function'
---

`useMergeRefs` is a custom hook used to merge several react refs into a single
one.

## Import

```js
import { useMergeRefs } from '@chakra-ui/react'
```

## Return value

The `useMergeRefs` hook returns a function that receives the element and assign
the value to the given React refs.

## Usage

```jsx
function Example({ ref, ...props }) {
  const internalRef = React.useRef()
  const refs = useMergeRefs(internalRef, ref)

  return (
    <div {...props} ref={refs}>
      A div with multiple refs.
    </div>
  )
}
```

### Usage combining with another Chakra-UI hooks

```jsx
function Example({ ref, ...props }) {
  const outsideRef = React.useRef()
  const { isOpen, onOpen, onClose } = useDisclosure()
  const { popperRef, referenceRef } = usePopper()

  useOutsideClick({
    ref: outsideRef,
    handler: () => isOpen && onClose(),
  })

  const buttonEl = useMergeRefs(outsideRef, referenceRef)

  return (
    <>
      <button ref={buttonEl} onClick={onOpen}>
        Click me to see the popover
      </button>
      {isOpen && (
        <Box ref={popperRef} bg='green'>
          Click outside to close me
        </Box>
      )}
    </>
  )
}
```