react state 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: prevstate in react
handleClick() {
this.setState(prevState => {
return {
count: prevState.count + 1
}
})
}