/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

2 votes205 views1 answer
All react navigation packages
Javascript React
4 votes180 views1 answer
Multiple click events in react
Javascript React
1 vote193 views1 answer
React manifest.json 404 (not found)
Javascript React
0 vote185 views1 answer
React native shadow maker
Javascript React
11 votes201 views3 answers
Shadow border react native
Javascript React
0 vote198 views1 answer
Onclick start and stop the count react
Javascript React
0 vote182 views1 answer
Hide and show on button click in react js functional component
Javascript React
1 vote186 views1 answer
React native fast image webp ios
Javascript React
0 vote201 views1 answer
Matched leaf route at location "/" does not have an element. react
Javascript React
9 votes191 views1 answer
Create react app in existing folder
Javascript React