Sprint0.md

Sprint 0: Getting Started

Create the React app.

$ create-react-app my-react-todo
$ cd my-react-todo
$ git init
$ git add .
$ git commit -m "initial commit"
$ npm start

Navigate to localhost:3000 to see the boilerplate create-react-app React application.

Step 1: Hello World

1. Our app won't require all of the files that create-react-app builds, so we'll start by removing files you won't need for this demo app. Remove the following files from the src folder:

$ rm src/App.css
$ rm src/App.test.js
$ rm src/logo.svg

or just run

$ rm src/App.css src/App.test.js src/logo.svg

You could also remove the favicon; just make sure you remove the reference to it from index.html as well.

At this point, there are probably errors in the browser letting you know some of those files are still used. The next step will help resolve those errors.

2. Modify the code inside the return block from src/App.js so that it returns JSX for a header with the text Hello World.

Also, remove the lines that reference for './App.css' and 'src/logo.svg'. The whole file should look like this:

// src/App.js
import React, { Component } from 'react';

class App extends Component {
  render() {
    return (
      <div className="App">
        <h1>Hello World</h1>
      </div>
    );
  }
}

export default App;

3. Switch over to your browser to automatically see the updates.

The create-react-app command installs and sets up a lot of useful tools. A tool called webpack manages automatic re-rendering when files change! Take 5 minutes to research what webpack is for and when it's useful.