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;usestate array push
setTheArray([...theArray, newElement]);add object to array react hook
setTheArray([...theArray, newElement]);Copyright © 2021 Codeinu
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