File size: 753 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 |
# `useUpdateEffect`
React effect hook that ignores the first invocation (e.g. on mount). The signature is exactly the same as the `useEffect` hook.
## Usage
```jsx
import React from 'react'
import {useUpdateEffect} from 'react-use';
const Demo = () => {
const [count, setCount] = React.useState(0);
React.useEffect(() => {
const interval = setInterval(() => {
setCount(count => count + 1)
}, 1000)
return () => {
clearInterval(interval)
}
}, [])
useUpdateEffect(() => {
console.log('count', count) // will only show 1 and beyond
return () => { // *OPTIONAL*
// do something on unmount
}
}) // you can include deps array if necessary
return <div>Count: {count}</div>
};
```
|