yesjin-git · ksh0323a · Dec 14, 2019 · Dec 20, 2019 · Dec 21, 2019
diff --git a/counter-hw/.gitignore b/counter-hw/.gitignore
@@ -0,0 +1,25 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+.idea
+.gitignore
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
diff --git a/counter-hw/package.json b/counter-hw/package.json
@@ -0,0 +1,34 @@
+{
+  "name": "counter-hw",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@testing-library/jest-dom": "^4.2.4",
+    "@testing-library/react": "^9.3.2",
+    "@testing-library/user-event": "^7.1.2",
+    "react": "^16.12.0",
+    "react-dom": "^16.12.0",
+    "react-scripts": "3.3.0"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": "react-app"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}
diff --git a/counter-hw/public/favicon.ico b/counter-hw/public/favicon.ico
diff --git a/counter-hw/public/index.html b/counter-hw/public/index.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      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>
diff --git a/counter-hw/public/logo192.png b/counter-hw/public/logo192.png
diff --git a/counter-hw/public/logo512.png b/counter-hw/public/logo512.png
diff --git a/counter-hw/public/manifest.json b/counter-hw/public/manifest.json
@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
diff --git a/counter-hw/public/robots.txt b/counter-hw/public/robots.txt
@@ -0,0 +1,2 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
diff --git a/counter-hw/src/App.css b/counter-hw/src/App.css
@@ -0,0 +1,38 @@
+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.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);
+  }
+}
diff --git a/counter-hw/src/App.js b/counter-hw/src/App.js
@@ -0,0 +1,24 @@
+import React, {Component} from 'react';
+import logo from './logo.svg';
+import './App.css';
+import Counter from "./Counter";
+import Clock from "./Clock";
+
+class App extends Component {
+
+    render() {
+        return (
+            <div className="App">
+                <header className="App-header">
+                    <img src={logo} className="App-logo" alt="logo"/>
+                    <Counter step={1} />
+                    <Counter step={2} />
+                    <p>----------------------------------------------</p>
+                    <Clock/>
+                </header>
+            </div>
+        );
+    }
+}
+
+export default App;
diff --git a/counter-hw/src/App.test.js b/counter-hw/src/App.test.js
@@ -0,0 +1,9 @@
+import React from 'react';
+import { render } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  const { getByText } = render(<App />);
+  const linkElement = getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});
diff --git a/counter-hw/src/Clock.js b/counter-hw/src/Clock.js
@@ -0,0 +1,48 @@
+import React, {Component} from "react";
+
+class Clock extends Component {
+    state = {
+        date: new Date(),
+        intervalId: undefined
+    };
+
+    /**
+     * start this clock
+     */
+    start = () => {
+        this.state.intervalId = setInterval(
+            () => {
+                this.setState(
+                    {
+                        date: new Date()
+                    });
+            }, 1000);
+    };
+
+    /**
+     * stop this clock
+     */
+    stop = () => {
+        clearInterval(this.state.intervalId);
+    };
+
+    componentDidMount() {
+        this.start()
+    }
+
+    componentWillUnmount() {
+        this.stop()
+    }
+
+    render() {
+        return (
+            <div>
+                <p>{this.state.date.toLocaleTimeString()}</p>
+                <p><button onClick={this.stop}>stop</button></p>
+                <p><button onClick={this.start}>start</button></p>
+            </div>
+        );
+    }
+}
+
+export default Clock
diff --git a/counter-hw/src/Counter.js b/counter-hw/src/Counter.js
@@ -0,0 +1,50 @@
+import React, {Component} from "react";
+
+class Counter extends Component {
+    state = {
+        num: 0
+    };
+
+    /**
+     * increase by props.step
+     */
+    handleInc = () => {
+        this.setState({
+            num: this.state.num + 1 * this.props.step
+        });
+    };
+
+    /**
+     * decrease by props.step
+     */
+    handleDec = () => {
+        if(this.state.num > 0) {
+            this.setState({
+                num: this.state.num - 1 * this.props.step
+            });
+        }
+    };
+
+    /**
+     * reset to zero
+     */
+    handleRst = () => {
+        this.setState({
+            num: 0
+        });
+    };
+
+    render() {
+        return <div>
+                <h1 className="App-title">Counter</h1>
+                    <p>값: {this.state.num}</p>
+                    <p>
+                        <button onClick={this.handleInc}>+</button>
+                        <button onClick={this.handleDec}>-</button>
+                        <button onClick={this.handleRst}>reset</button>
+                    </p>
+        </div>;
+    }
+}
+
+export default Counter;
diff --git a/counter-hw/src/index.css b/counter-hw/src/index.css
@@ -0,0 +1,13 @@
+body {
+  margin: 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;
+}
diff --git a/counter-hw/src/index.js b/counter-hw/src/index.js
@@ -0,0 +1,12 @@
+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();
diff --git a/counter-hw/src/logo.svg b/counter-hw/src/logo.svg
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		# https://www.robotstxt.org/robotstxt.html
		User-agent: *