/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 vote153 views2 answers
React material ui
Javascript React
0 vote140 views1 answer
How to make dynamic title for screen in react native
Javascript React
64 votes122 views4 answers
How to install react-router-dom in react js
Javascript React
1 vote121 views1 answer
For loop value index react
Javascript React
-1 vote122 views2 answers
Email validation in react js
Javascript React
3 votes221 views3 answers
Center horizontally react native
Javascript React
0 vote128 views1 answer
React string to integer
Javascript React
0 vote118 views1 answer
Disable enter on input field react
Javascript React
4 votes135 views4 answers
Width 100% react native
Javascript React
4 votes143 views1 answer
How to use font awewsome in react app
Javascript React