JAVASCRIPT

react express

git clone https://github.com/valentingorr/wres-boilerplate.git .
or
git clone https://github.com/valentingorr/advanced-wres-boilerplate.git .
then
npm install --legacy-peer-deps

react and express

constructor(props) {
    super(props);
    this.state = { apiResponse: "" };
}

callAPI() {
    fetch("http://localhost:9000/testAPI")
        .then(res => res.text())
        .then(res => this.setState({ apiResponse: res }));
}

componentWillMount() {
    this.callAPI();
}