React.js: What you might ask when getting started

Why import like this import React from 'react' without explicitly using React?

• Because JSX was trans-compiled like React.createElment(...)

How to use React with Babel in a single HTML page?

• You can use unpkg.com to load UMD version of React, ReactDOM, babel.
• See also: https://jizusun.github.io/demo/react-router-demo#/

What’s the difference between React Router v4 and earlier version? How to install?

• React Router v3

  • yarn add react-router@^3
  • Docs: https://github.com/ReactTraining/react-router/tree/v3/docs

• React Router v4

  • yarn add react-router-dom
  • Docs: https://reacttraining.com/react-router

What’s the difference between Material UI v0.x and v1?

• https://github.com/mui-org/material-ui
• Installation
  • Stable channel v1: yarn add @material-ui/core
  • v0.x (Migration to v1): yarn add material-ui
• Changelog:

How does HMR works, and how to get it with create-react-app and react-router?

• https://github.com/jizusun/ssr-web-utils/commit/f06583ca4b73dc21544bfc7305a188b19dc0e768