/Javascript/React/Functional component how to add to existing array react

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 vote243 views1 answer
Timezone in react js
Javascript React
14 votes215 views2 answers
React router link with params
Javascript React
0 vote229 views2 answers
Count down timer in react native
Javascript React
0 vote204 views1 answer
Update an object key value in state react
Javascript React
13 votes209 views1 answer
React js vs jsx
Javascript React
0 vote203 views1 answer
Add two export in same page react
Javascript React
8 votes212 views3 answers
Disable eslint for react project
Javascript React
1 vote301 views2 answers
Shadow on view in react natice
Javascript React
12 votes262 views3 answers
Vs code emmet for html in react
Javascript React
4 votes202 views1 answer
Use of useNavigate from 'react-router-dom'
Javascript React