react_example.js

  handleUser = (e) => {
      e.preventDefault();
      const user = e.target['user-input'].value;
      fetch(`${config.API_ENDPOINT}/reviews/${user}`)
        .then((res) => {
          if (!res.ok) return res.json().then((e) => Promise.reject(e));
          return res.json();
        })
        .then((data) => {
          if(data.length < 1){
            
            this.setState({
            reviews: [
              {user_name: '', title: "No Results", author: '', content: ''},
            ],
          });
          
          }
        else{
          this.setState({
            reviews: [
              ...data,
            ],
          });
          }

        })
        .catch((error) => {
          console.error({ error });
        });
    }