How to Fetch from my local host? Connect React.js to Node.js

Creating my first MERN application and connected the frontend to the backend.

Taking baby steps and trying to simply call the already existing “books” in my mongo database.

Heres what I have

 const fetchingFunction = () => {

   fetch('http://localhost:5000/books', {
     method: "GET",
     headers: {
       "Content-Type": "application/json",
       'Accept': 'application/json'
     }
   }).then(function(response) {

      response.json();

   }).then(data => console.log(data))

 }

I keep getting the error

Uncaught (in promise) SyntaxError: Unexpected token h in JSON at position 0

Answer

You need to return the response.json().

 const fetchingFunction = () => {

   fetch('http://localhost:5000/books', {
     method: "GET",
     headers: {
       "Content-Type": "application/json",
       'Accept': 'application/json'
     }
   }).then(function(response) {

      return response.json();

   }).then(data => console.log(data))

 }