React.js语法问题

Question

please help me in the code. i have a problem with getInitialState() , the code isn't work: enter image description here

the mistake is on the picture, but i can't see this.

Answer 1

You're using ES6 classes, which means you need to use a constructor to initialize the state:

class App extends Component {
    constructor(props) {
        super(props);
        this.state = {
            show: true
        };
    }

    // ..
}

Reference: What is the difference between using constructor vs getInitialState in React / React Native?