setstate react prevstate code example
Example 1: react prevstate
handleClick() {
this.setState(prevState => ({
isToggleOn: !prevState.isToggleOn
}));
}
Example 2: prevstate in usestate
const [prevState, setState] = React.useState([]);
setState(prevState => [...prevState, 'somedata'] );
Example 3: this.setstate prevstate
this.setState(prevState => ({ n: !prevState.n }))