Modify only array from the state object-CodePudding

I have a state object that contains an object and I am trying to add/remove items from it without success:

const [currentUser,setCurrentUser]=useState(Object)

and the Object looks like:

{username:"username",
array:[0,...,N]}

This tells me that it does not recognize the array...

setCurrentUser([...currentUser.array,index])

CodePudding user response：

You said your state contains an array, but your code shows it contains an Object instead. So to update only the array inside the object, you should do:

setCurrentUser({...currentUser, array: [...currentUser.array, index]})