Components added

.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>reactjs-components</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+	</natures>
+</projectDescription>

setup/README.md

+# Components
+
+This project primarily focuses on creating reusable [React Components](https://reactjs.org/docs/react-component.html?utm_source=caibaojian.com) and using them inside the app. Components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
+
+### Creating Our First Component
+
+Create a folder named `components` inside the `src` folder. This folder will basically contain our UI components. 
+
+Inside this folder, create a file named `Heading.js` with the following content
+
+```sh
+import React from 'react';
+
+const Heading = () => {
+    return <h1 className="text-center">Products</h1>;
+}
+
+export default Heading;
+```
+
+It's all done and now you can use the component wherever you need. Just import the component in App.js:
+
+`import Heading from './components/Heading'`
+
+And within the `render` method, you can use the component:
+
+`<Heading />`
+
+### Creating Further Components
+
+Components can refer to other components in their output. This lets us use the same component abstraction for any level of detail. A button, a form, a dialog, a screen: in React apps, all those are commonly expressed as components. Don’t be afraid to split components into smaller components. For this project, we'll make a `Table` component, which is composed of a `TableHeader` and `TableBody` component. Therefore, this component will require more than one file. Create a folder named `Table` inside the `components` folder, and add the following files:
+
+```sh
+components
+├── Table
+│   ├── index.js
+│   ├── TableHeader.js
+│   ├── TableBody.js
+│   └── style.scss
+```
+
+Add the following content to `TableHeader` component:
+
+```
+import React from 'react';
+
+const TableHeader = () => {
+    return (
+        <thead>
+            <tr>
+                <th>Image</th>
+                <th>Name</th>
+                <th>Price</th>
+                <th>Description</th>
+            </tr>
+        </thead>);
+}
+
+export default TableHeader;
+```
+
+And add the following content to `TableBody` component:
+
+```
+import React from 'react';
+
+const TableBody = () => {
+    return (
+        <tbody>
+            <tr>
+                <th><img src={require('../../images/tablet.jpg')} alt="img-tablet" width="100" height="100" /></th>
+                <th>10-Inch Tablet</th>
+                <th>269</th>
+                <th>Android 4.3 Jelly Bean, 10.1-inch Full HD (1920 x 1200) Display</th>
+            </tr>
+            <tr>
+                <th><img src={require('../../images/shoe.jpg')} alt="img-shoe" width="100" height="100" /></th>
+                <th>Running Shoe</th>
+                <th>48</th>
+                <th>Synthetic and Mesh, Imported, Rubber sole, Flex Film welded upper, HydraMAX moisture-wicking collar lining</th>
+            </tr>
+            <tr>
+                <th><img src={require('../../images/watch.jpg')} alt="img-watch" width="100" height="100" /></th>
+                <th>Slim Bracelet Watch</th>
+                <th>27</th>
+                <th>A narrow gold-tone bracelet supports the round case of this  watch, which features three rhinestones marking each hour and a sparkling halo on the bezel</th>
+            </tr>
+        </tbody>);
+}
+
+export default TableBody;
+```
+Now we're ready to use these sub-components in our main `Table` component. Just import and add these components:
+
+```
+import React from 'react';
+import TableHeader from './TableHeader';
+import TableBody from './TableBody';
+import './style.scss'
+
+export default class Table extends React.Component {
+    render() {
+        return (
+            <table>
+                <TableHeader />
+                <TableBody />
+            </table>
+        );
+    }
+}
+```
+
+That's all. Now `Table` component can be used in App.js:
+
+```
+import React, { Component } from 'react';
+import Heading from './components/Heading'
+import Table from './components/Table'
+import './app.scss';
+
+class App extends Component {
+  render() {
+    return (
+      <div className="App">
+        <Heading />
+        <Table />
+      </div>
+    );
+  }
+}
+
+export default App;
+```
\ No newline at end of file

setup/package.json

+{
+  "name": "my-app",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "node-sass": "^4.11.0",
+    "react": "^16.8.6",
+    "react-dom": "^16.8.6",
+    "react-scripts": "2.1.8"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": "react-app"
+  },
+  "browserslist": [
+    ">0.2%",
+    "not dead",
+    "not ie <= 11",
+    "not op_mini all"
+  ]
+}

setup/public/index.html

+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, shrink-to-fit=no"
+    />
+    <meta name="theme-color" content="#000000" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>

setup/public/manifest.json

+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

setup/src/App.css

+.App {
+  text-align: center;
+}
+
+.App-logo {
+  animation: App-logo-spin infinite 20s linear;
+  height: 40vmin;
+  pointer-events: none;
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}

setup/src/App.js

+import React, { Component } from 'react';
+import './app.scss';
+
+class App extends Component {
+	render() {
+		return (
+			<div className="App">
+				<h1 className="text-center">Products</h1>
+				<table>
+					<thead>
+						<tr>
+							<th>Image</th>
+							<th>Name</th>
+							<th>Price</th>
+							<th>Description</th>
+						</tr>
+					</thead>
+					<tbody>
+						<tr>
+							<th><img src={require('./images/tablet.jpg')} alt="img-tablet" width="100" height="100"/></th>
+							<th>10-Inch Tablet</th>
+							<th>269</th>
+							<th>Android 4.3 Jelly Bean, 10.1-inch Full HD (1920 x 1200) Display</th>
+						</tr>
+						<tr>
+							<th><img src={require('./images/shoe.jpg')} alt="img-shoe" width="100" height="100"/></th>
+							<th>Running Shoe</th>
+							<th>48</th>
+							<th>Synthetic and Mesh, Imported, Rubber sole, Flex Film welded upper, HydraMAX moisture-wicking collar lining</th>
+						</tr>
+						<tr>
+							<th><img src={require('./images/watch.jpg')} alt="img-watch" width="100" height="100"/></th>
+							<th>Slim Bracelet Watch</th>
+							<th>27</th>
+							<th>A narrow gold-tone bracelet supports the round case of this  watch, which features three rhinestones marking each hour and a sparkling halo on the bezel</th>
+						</tr>
+					</tbody>
+				</table>
+			</div>
+		);
+	}
+}
+
+export default App;

setup/src/App.test.js

+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+it('renders without crashing', () => {
+  const div = document.createElement('div');
+  ReactDOM.render(<App />, div);
+  ReactDOM.unmountComponentAtNode(div);
+});

setup/src/app.scss

+@import './theme/colors.scss';
+
+h1 {
+    font-family: 'Open Sans', sans-serif;
+    font-weight: 300;
+    color: $primary-dark;
+};
+
+th {
+    font-family: 'Open Sans', sans-serif;
+    color: $primary-dark;
+    padding: 10px;
+}
+
+thead th {
+    font-weight: 600;
+}
+
+tbody th {
+    font-weight: 300;
+}
+
+table {
+    border: 1px solid $primary-light;
+    border-radius: 2px;
+    border-spacing: 0
+}
+
+tr {
+    background-color: $white;
+}
+
+tbody tr:nth-child(odd){
+    background-color: $light-gray;
+}
+
+.App {
+    padding: 10px;
+}
+
+.text-center {
+    text-align: center;
+}
\ No newline at end of file

setup/src/index.css

+body {
+  margin: 0;
+  padding: 0;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
+    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New",
+    monospace;
+}

setup/src/index.js

+import React from 'react';
+import ReactDOM from 'react-dom';
+import './index.css';
+import App from './App';
+import * as serviceWorker from './serviceWorker';
+
+ReactDOM.render(<App />, document.getElementById('root'));
+
+// If you want your app to work offline and load faster, you can change
+// unregister() to register() below. Note this comes with some pitfalls.
+// Learn more about service workers: https://bit.ly/CRA-PWA
+serviceWorker.unregister();

setup/src/logo.svg

+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
+    <g fill="#61DAFB">
+        <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
+        <circle cx="420.9" cy="296.5" r="45.7"/>
+        <path d="M520.5 78.1z"/>
+    </g>
+</svg>

setup/src/serviceWorker.js

+// This optional code is used to register a service worker.
+// register() is not called by default.
+
+// This lets the app load faster on subsequent visits in production, and gives
+// it offline capabilities. However, it also means that developers (and users)
+// will only see deployed updates on subsequent visits to a page, after all the
+// existing tabs open on the page have been closed, since previously cached
+// resources are updated in the background.
+
+// To learn more about the benefits of this model and instructions on how to
+// opt-in, read https://bit.ly/CRA-PWA
+
+const isLocalhost = Boolean(
+  window.location.hostname === 'localhost' ||
+    // [::1] is the IPv6 localhost address.
+    window.location.hostname === '[::1]' ||
+    // 127.0.0.1/8 is considered localhost for IPv4.
+    window.location.hostname.match(
+      /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
+    )
+);
+
+export function register(config) {
+  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
+    // The URL constructor is available in all browsers that support SW.
+    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
+    if (publicUrl.origin !== window.location.origin) {
+      // Our service worker won't work if PUBLIC_URL is on a different origin
+      // from what our page is served on. This might happen if a CDN is used to
+      // serve assets; see https://github.com/facebook/create-react-app/issues/2374
+      return;
+    }
+
+    window.addEventListener('load', () => {
+      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
+
+      if (isLocalhost) {
+        // This is running on localhost. Let's check if a service worker still exists or not.
+        checkValidServiceWorker(swUrl, config);
+
+        // Add some additional logging to localhost, pointing developers to the
+        // service worker/PWA documentation.
+        navigator.serviceWorker.ready.then(() => {
+          console.log(
+            'This web app is being served cache-first by a service ' +
+              'worker. To learn more, visit https://bit.ly/CRA-PWA'
+          );
+        });
+      } else {
+        // Is not localhost. Just register service worker
+        registerValidSW(swUrl, config);
+      }
+    });
+  }
+}
+
+function registerValidSW(swUrl, config) {
+  navigator.serviceWorker
+    .register(swUrl)
+    .then(registration => {
+      registration.onupdatefound = () => {
+        const installingWorker = registration.installing;
+        if (installingWorker == null) {
+          return;
+        }
+        installingWorker.onstatechange = () => {
+          if (installingWorker.state === 'installed') {
+            if (navigator.serviceWorker.controller) {
+              // At this point, the updated precached content has been fetched,
+              // but the previous service worker will still serve the older
+              // content until all client tabs are closed.
+              console.log(
+                'New content is available and will be used when all ' +
+                  'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
+              );
+
+              // Execute callback
+              if (config && config.onUpdate) {
+                config.onUpdate(registration);
+              }
+            } else {
+              // At this point, everything has been precached.
+              // It's the perfect time to display a
+              // "Content is cached for offline use." message.
+              console.log('Content is cached for offline use.');
+
+              // Execute callback
+              if (config && config.onSuccess) {
+                config.onSuccess(registration);
+              }
+            }
+          }
+        };
+      };
+    })
+    .catch(error => {
+      console.error('Error during service worker registration:', error);
+    });
+}
+
+function checkValidServiceWorker(swUrl, config) {
+  // Check if the service worker can be found. If it can't reload the page.
+  fetch(swUrl)
+    .then(response => {
+      // Ensure service worker exists, and that we really are getting a JS file.
+      const contentType = response.headers.get('content-type');
+      if (
+        response.status === 404 ||
+        (contentType != null && contentType.indexOf('javascript') === -1)
+      ) {
+        // No service worker found. Probably a different app. Reload the page.
+        navigator.serviceWorker.ready.then(registration => {
+          registration.unregister().then(() => {
+            window.location.reload();
+          });
+        });
+      } else {
+        // Service worker found. Proceed as normal.
+        registerValidSW(swUrl, config);
+      }
+    })
+    .catch(() => {
+      console.log(
+        'No internet connection found. App is running in offline mode.'
+      );
+    });
+}
+
+export function unregister() {
+  if ('serviceWorker' in navigator) {
+    navigator.serviceWorker.ready.then(registration => {
+      registration.unregister();
+    });
+  }
+}

setup/src/theme/colors.scss

+$primary-dark: #111111;
+$primary-light: #DDDDDD;
+$light-gray: #EEEEEE;
+$background-gray: #F9F9F9;
+$white: #FFFFFF;

solution/README.md

+# Components
+
+This project primarily focuses on creating reusable [React Components](https://reactjs.org/docs/react-component.html?utm_source=caibaojian.com) and using them inside the app. Components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
+
+### Creating Our First Component
+
+Create a folder named `components` inside the `src` folder. This folder will basically contain our UI components. 
+
+Inside this folder, create a file named `Heading.js` with the following content
+
+```sh
+import React from 'react';
+
+const Heading = () => {
+    return <h1 className="text-center">Products</h1>;
+}
+
+export default Heading;
+```
+
+It's all done and now you can use the component wherever you need. Just import the component in App.js:
+
+`import Heading from './components/Heading'`
+
+And within the `render` method, you can use the component:
+
+`<Heading />`
+
+### Creating Further Components
+
+Components can refer to other components in their output. This lets us use the same component abstraction for any level of detail. A button, a form, a dialog, a screen: in React apps, all those are commonly expressed as components. Don’t be afraid to split components into smaller components. For this project, we'll make a `Table` component, which is composed of a `TableHeader` and `TableBody` component. Therefore, this component will require more than one file. Create a folder named `Table` inside the `components` folder, and add the following files:
+
+```sh
+components
+├── Table
+│   ├── index.js
+│   ├── TableHeader.js
+│   ├── TableBody.js
+│   └── style.scss
+```
+
+Add the following content to `TableHeader` component:
+
+```
+import React from 'react';
+
+const TableHeader = () => {
+    return (
+        <thead>
+            <tr>
+                <th>Image</th>
+                <th>Name</th>
+                <th>Price</th>
+                <th>Description</th>
+            </tr>
+        </thead>);
+}
+
+export default TableHeader;
+```
+
+And add the following content to `TableBody` component:
+
+```
+import React from 'react';
+
+const TableBody = () => {
+    return (
+        <tbody>
+            <tr>
+                <th><img src={require('../../images/tablet.jpg')} alt="img-tablet" width="100" height="100" /></th>
+                <th>10-Inch Tablet</th>
+                <th>269</th>
+                <th>Android 4.3 Jelly Bean, 10.1-inch Full HD (1920 x 1200) Display</th>
+            </tr>
+            <tr>
+                <th><img src={require('../../images/shoe.jpg')} alt="img-shoe" width="100" height="100" /></th>
+                <th>Running Shoe</th>
+                <th>48</th>
+                <th>Synthetic and Mesh, Imported, Rubber sole, Flex Film welded upper, HydraMAX moisture-wicking collar lining</th>
+            </tr>
+            <tr>
+                <th><img src={require('../../images/watch.jpg')} alt="img-watch" width="100" height="100" /></th>
+                <th>Slim Bracelet Watch</th>
+                <th>27</th>
+                <th>A narrow gold-tone bracelet supports the round case of this  watch, which features three rhinestones marking each hour and a sparkling halo on the bezel</th>
+            </tr>
+        </tbody>);
+}
+
+export default TableBody;
+```
+Now we're ready to use these sub-components in our main `Table` component. Just import and add these components:
+
+```
+import React from 'react';
+import TableHeader from './TableHeader';
+import TableBody from './TableBody';
+import './style.scss'
+
+export default class Table extends React.Component {
+    render() {
+        return (
+            <table>
+                <TableHeader />
+                <TableBody />
+            </table>
+        );
+    }
+}
+```
+
+That's all. Now `Table` component can be used in App.js:
+
+```
+import React, { Component } from 'react';
+import Heading from './components/Heading'
+import Table from './components/Table'
+import './app.scss';
+
+class App extends Component {
+  render() {
+    return (
+      <div className="App">
+        <Heading />
+        <Table />
+      </div>
+    );
+  }
+}
+
+export default App;
+```
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