append to array usestate code example

Example 1: React Hooks append state

setTheArray(currentArray => [...currentArray, newElement])

Example 2: add items to a react array in hooks

const addMessage = (newMessage) => setMessages(state => [...state, newMessage])

Example 3: add items to a react array in hooks

const addMessage = (newMessage) => setMessages(state => [newMessage, ...state])