/Javascript/React/Dynamic useState in react

Dynamic useState in react

const data = ["James", "John", "Jessica", "Jamie"];

function App() {
  const [visibilities, setVisibilities] = React.useState(() => data.map((x) => true));

  const handleClick = (event) => {
    const index = parseInt(event.currentTarget.dataset.index, 10);
    const newVisibilities = [...visibilities];
    newVisibilities[index] = !newVisibilities[index];
    setVisibilities(newVisibilities);
  };

  return (
    <div className="App">
      {data.map((value, index) => (
        <h1 data-index={index} onClick={handleClick} className={visibilities[index] ? "selected" : undefined}>
          Hello {value}, you are {visibilities[index] ? "visible" : "hidden"}!
        </h1>
      ))}
    </div>
  );
}

ReactDOM.render(<App />, document.querySelector("main"));

Source: stackoverflow.com

Similar codes

0 vote165 views1 answer
Add Navbar to React Redux CRUD App
Javascript React
16 votes148 views1 answer
React native 0.60.4 xiaomi crashes at open
Javascript React
0 vote207 views1 answer
Coreui react change background color
Javascript React
0 vote145 views1 answer
React antd form disable submit button
Javascript React
0 vote326 views1 answer
React yup password with number string and uppercase
Javascript React
31 votes148 views6 answers
React Sass
Javascript React
0 vote158 views1 answer
React native getting older version assets
Javascript React
105 votes163 views1 answer
React simbu
Javascript React
0 vote134 views1 answer
React setstate in another component
Javascript React
0 vote148 views1 answer
Take string until react
Javascript React