React Hooks append state
setTheArray(currentArray => [...currentArray, newElement])React Hooks append state
setTheArray(currentArray => [...currentArray, newElement])How to add object in an array using useState
import React, { useState } from 'react';
function App() {
const [items, setItems] = useState([]);
// handle click event of the button to add item
const addMoreItem = () => {
setItems(prevItems => [...prevItems, {
id: prevItems.length,
value: getRandomNumber()
}]);
}
// generate 6 digit random number
const getRandomNumber = () => {
return Math.random().toString().substring(2, 8);
}
return (
<div classname="App">
<h3>useState with an array in React Hooks - <a href="https://www.cluemediator.com">Clue Mediator</a></h3>
<br>
<button onclick="{addMoreItem}">Add More</button>
<br><br>
<label>Output:</label>
<pre>{JSON.stringify(items, null, 2)}</pre>
</div>
);
}
export default App;adding to array using reach hooks
setMyArray(oldArray => [...oldArray, newElement]);add items to a react array in hooks
const addMessage = (newMessage) => setMessages(state => [...state, newMessage])add object to array react hook
setTheArray([...theArray, newElement]);Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
