state with react functions
class Example extends React.Component {
constructor(props) {
super(props);
this.state = {
count: 0
};
}
render() {
return (
<div>
<p>You clicked {this.state.count} times</p>
<button onClick={() => this.setState({ count: this.state.count + 1 })}>
Click me
</button>
</div>
);
}
}use multiple State of react
function Form() {
// 1. Use the name state variable
const [name, setName] = useState('Mary');
// 2. Use an effect for persisting the form
useEffect(function persistForm() {
localStorage.setItem('formData', name);
});
// 3. Use the surname state variable
const [surname, setSurname] = useState('Poppins');
// 4. Use an effect for updating the title
useEffect(function updateTitle() {
document.title = name + ' ' + surname;
});
// ...
}Copyright © 2021 Codeinu
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