/Javascript/React/React Hooks append state

React Hooks append state

Usestate array push

setTheArray([...theArray, newElement]);

Source: stackoverflow.com

React Hooks append state

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

Functional component how to add to existing array react

const {useState, useCallback} = React;
function Example() {
    const [theArray, setTheArray] = useState([]);
    const addEntryClick = () => {
        setTheArray([...theArray, `Entry ${theArray.length}`]);
    };
    return [
        <input type="button" onClick={addEntryClick} value="Add" />,
        <div>{theArray.map(entry =>
          <div>{entry}</div>
        )}
        </div>
    ];
}

ReactDOM.render(
    <Example />,
    document.getElementById("root")
);

Source: stackoverflow.com

Similar codes

0 vote210 views1 answer
Date in react js
Javascript React
3 votes186 views1 answer
React native nox emulator
Javascript React
0 vote192 views1 answer
Orderbychild firebase react
Javascript React
0 vote188 views1 answer
Sort by string react
Javascript React
7 votes187 views3 answers
Add backgorund image in react native app
Javascript React
0 vote192 views1 answer
Nice react native shadow
Javascript React
0 vote179 views1 answer
UseFetch custom hook for React
Javascript React
0 vote196 views3 answers
Github react hardhat nft marketplace application
Javascript React
0 vote198 views1 answer
Limit values that satisy a url parameter react-router
Javascript React
0 vote210 views1 answer
Antd react native
Javascript React