On gists

useFetch (custom hook)

React

useFetch.js Raw #

import { useState, useEffect } from 'react';

const useFetch = (url) => {
  const [data, setData] = useState(null);
  const [isPending, setIsPending] = useState(true);
  const [error, setError] = useState(null);

  useEffect(() => {
    setTimeout(() => {
      fetch(url)
      .then(res => {
        if (!res.ok) { // error coming back from server
          throw Error('could not fetch the data for that resource');
        } 
        return res.json();
      })
      .then(data => {
        setIsPending(false);
        setData(data);
        setError(null);
      })
      .catch(err => {
        // auto catches network / connection error
        setIsPending(false);
        setError(err.message);
      })
    }, 1000);
  }, [url])

  return { data, isPending, error };
}
 
export default useFetch;

Home.jsx Raw #

import { useEffect, useState } from "react";
import BlogList from "./BlogList";
import useFetch from "./useFetch";

const Home = () => {
  const { error, isPending, data: blogs } = useFetch('http://localhost:8000/blogs')

  return (
    <div className="home">
      { error && <div>{ error }</div> }
      { isPending && <div>Loading...</div> }
      { blogs && <BlogList blogs={blogs} /> }
    </div>
  );
}
 
export default Home;