how to setstate inside render ? code example

Example 1: setstate react js

constructor(props) {
        super(props);
        this.state = {
            isActive: true,
        };
    }

    checkStatus = () => {
        this.setState({		// use this function
            'isActive' : !this.state.isActive,
        });
    }

Example 2: can we add new state property using setstate in react

How to become a pro with React setState() in 10 minuteswww.freecodecamp.org › news › get-pro-with-react-set...