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ListTodo-Component-Created
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‎ListTodo-Component-Created/frontend/todo-app/package-lock.json‎

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‎ListTodo-Component-Created/frontend/todo-app/package.json‎

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{
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"name": "todo-app",
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"version": "0.1.0",
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"private": true,
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"dependencies": {
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"react": "^16.8.4",
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"react-dom": "^16.8.4",
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"react-router-dom": "^4.3.1",
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"react-scripts": "2.1.8"
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},
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"scripts": {
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"start": "react-scripts start",
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"build": "react-scripts build",
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"test": "react-scripts test",
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"eject": "react-scripts eject"
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},
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"eslintConfig": {
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"extends": "react-app"
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},
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"browserslist": [
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">0.2%",
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"not dead",
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"not ie <= 11",
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"not op_mini all"
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]
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}

‎ListTodo-Component-Created/frontend/todo-app/public/favicon.ico‎

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‎ListTodo-Component-Created/frontend/todo-app/public/index.html‎

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

‎ListTodo-Component-Created/frontend/todo-app/public/manifest.json‎

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

‎ListTodo-Component-Created/frontend/todo-app/src/App.css‎

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

‎ListTodo-Component-Created/frontend/todo-app/src/App.js‎

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import React, { Component } from 'react';
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import FirstComponent from './components/learning-examples/FirstComponent'
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import SecondComponent from './components/learning-examples/SecondComponent'
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import ThirdComponent from './components/learning-examples/ThirdComponent'
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import Counter from './components/counter/Counter'
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import TodoApp from './components/todo/TodoApp'
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import './App.css';
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class App extends Component {
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render() {
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return (
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<div className="App">
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{/*<Counter/>*/}
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<TodoApp/>
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</div>
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);
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}
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}
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class LearningComponents extends Component {
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render() {
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return (
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<div className="LearningComponents">
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My Hello World
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<FirstComponent></FirstComponent>
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<SecondComponent></SecondComponent>
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<ThirdComponent></ThirdComponent>
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</div>
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);
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}
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}
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export default App;

‎ListTodo-Component-Created/frontend/todo-app/src/App.test.js‎

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

‎ListTodo-Component-Created/frontend/todo-app/src/components/counter/Counter.css‎

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button {
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background-color: green;
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font-size : 16px;
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padding : 15px 30px;
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color : white;
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width : 100px;
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}
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.count {
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font-size : 50px;
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padding : 15px 30px;
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}
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.reset {
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background-color: red;
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width : 200px;
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}
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body {
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padding : 15px 30px;
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}

‎ListTodo-Component-Created/frontend/todo-app/src/components/counter/Counter.jsx‎

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import React, {Component} from 'react'
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import PropTypes from 'prop-types'
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import './Counter.css'
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class Counter extends Component {
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constructor() {
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super(); //Error 1
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this.state = {
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counter : 0
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}
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this.increment = this.increment.bind(this);
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this.decrement = this.decrement.bind(this);
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this.reset = this.reset.bind(this);
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}
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render() {
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return (
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<div className="counter">
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<CounterButton by={1} incrementMethod={this.increment} decrementMethod={this.decrement}/>
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<CounterButton by={5} incrementMethod={this.increment} decrementMethod={this.decrement}/>
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<CounterButton by={10} incrementMethod={this.increment} decrementMethod={this.decrement}/>
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<span className="count">{this.state.counter}</span>
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<div><button className="reset" onClick={this.reset}>Reset</button></div>
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</div>
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);
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}
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reset() {
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this.setState( {counter: 0});
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}
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increment(by) {
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//console.log(`increment from child - ${by}`)
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this.setState(
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(prevState) => {
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return {counter: prevState.counter + by}
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}
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);
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}
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decrement(by) {
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//console.log(`increment from child - ${by}`)
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this.setState(
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(prevState) => {
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return {counter: prevState.counter - by}
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}
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);
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}
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}
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class CounterButton extends Component {
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//Define the initial state in a constructor
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//state => counter 0
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constructor() {
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super(); //Error 1
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// this.state = {
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// counter : 0
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// }
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// this.increment = this.increment.bind(this);
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// this.decrement = this.decrement.bind(this);
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}
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render() {
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//render = () => {
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//const style = {fontSize : "50px", padding : "15px 30px"};
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return (
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<div className="counter">
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<button onClick={() => this.props.incrementMethod(this.props.by)} >+{this.props.by}</button>
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<button onClick={() => this.props.decrementMethod(this.props.by)} >-{this.props.by}</button>
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{/*<span className="count"
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>{this.state.counter}</span>*/}
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</div>
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)
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}
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// increment() { //Update state - counter++
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// //console.log('increment');
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// //this.state.counter++; //Bad Practice
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// this.setState({
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// counter: this.state.counter + this.props.by
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// });
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// this.props.incrementMethod(this.props.by);
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// }
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// decrement () {
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// this.setState({
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// counter: this.state.counter - this.props.by
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// });
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// this.props.decrementMethod(this.props.by);
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// }
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}
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CounterButton.defaultProps = {
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by : 1
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}
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CounterButton.propTypes = {
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by : PropTypes.number
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}
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export default Counter

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