Function useDidUpdate

useDidUpdate<T>(
    current: T,
    didUpdate: (previous: T, current: T) => void,
    compare?: (previous: T, current: T) => boolean,
): void
Beta
A hook for doing side effects as a response to a change in a hook value between renders
Type Parameters
- T
Parameters
- current: T
  The value you want to respond to changes in.
- didUpdate: (previous: T, current: T) => void
  Callback to run when the value changes.
- Optionalcompare: (previous: T, current: T) => boolean
Returns void
Example
```
useDidUpdate(hasFocus, (hadFocus, hasFocus) => {
 if (hasFocus) {
   scrollIntoView(elementRef.current)
  }
})
```
Hidden
- Defined in packages/sanity/src/core/form/hooks/useDidUpdate.ts:19