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reactjsuse-state

How to execute call after setState finish?

Got this call:

setPou2({ ...pou2, imgId: po?.imgId2 }, () => {})

and it raise an error:

Expected 1 arguments, but got 2.
Solution

  • It's due to you are passing 2nd argument of call. setPou2({...pou2, imgId:po?.imgId2}) this will not raise any error.

    If you want callback function after change in state you need to use useEffect by passing that particular state as array.

    useEffect(()=>{
  // function you want to run
},[pou2])

    or you can check this useStateWithCallback