[React] next.js CSR, SSR, SSG 簡單實作 implement

一、CSR

import { useEffect, useState } from 'react';
 
interface Post {
  userId: number,
  id: number,
  title: string,
  body: string,
}
 
const Home = () => {
  const [post, setPost] = useState<Post>();
 
  useEffect(() => {
    fetch('https://jsonplaceholder.typicode.com/posts/1')
      .then((res) => res.json())
      .then((res) => setPost(res));
  }, []);
 
  return (
    <div>
      <h1>{post?.title}</h1>
      <p>{post?.body}</p>
    </div>
  )
}
 
export default Home

二、SSR

import type { GetServerSideProps } from 'next'
 
interface Post {
  userId: number,
  id: number,
  title: string,
  body: string,
}
 
interface HomeProps {
  post: Post,
}
 
const Home = ({ post }: HomeProps) => {
  return (
    <div>
      <h1>{post.title}</h1>
      <p>{post.body}</p>
    </div>
  )
}
 
export default Home
 
export const getServerSideProps: GetServerSideProps = async () => {
  const res = await fetch('https://jsonplaceholder.typicode.com/posts/1');
  const post: Post = await res.json();
 
  return {
    props: {
      post,
    },
  }
};

三、SSG

import type { GetStaticProps } from 'next'
 
interface Post {
  userId: number,
  id: number,
  title: string,
  body: string,
}
 
interface HomeProps {
  post: Post,
}
 
const Home = ({ post }: HomeProps) => {
  return (
    <div>
      <h1>{post.title}</h1>
      <p>{post.body}</p>
    </div>
  )
}
 
export default Home
 
export const getStaticProps: GetStaticProps = async () => {
  const res = await fetch('https://jsonplaceholder.typicode.com/posts/1');
  const post: Post = await res.json();
 
  return {
    props: {
      post,
    },
  }
};