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src/App.css

+.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);
+  }
+}

src/App.js

+import React from 'react';
+import './App.css';
+import Home from './Home'
+import Quiz from './Quiz'
+import End from './End'
+
+import { BrowserRouter as Router, Link, Switch, Route } from 'react-router-dom';
+
+function App() {
+  return (
+    <Router>
+      <header>
+        <Link to="/">
+          <button>Calculus</button>
+        </Link>
+      </header>
+      <hr/>
+      <div>
+        <Switch>
+          <Route exact path="/">
+            <Home/>
+          </Route>
+          <Route path="/quiz">
+            <Quiz/>
+          </Route>
+          <Route path="/end">
+            <End/>
+          </Route>
+        </Switch>
+      </div>
+    </Router>
+  )
+}
+
+
+export default App;
\ No newline at end of file

src/App.test.js

+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();
+});

src/End.js

+import React from 'react'
+import tr from './img_end.jpg';
+
+
+// import { Link } from 'react-router-dom';
+
+function End() {
+    let a = []
+    for (let i = 0; i < 3; i++) {
+
+        if (localStorage.getItem('답'+(i+1)) === localStorage.getItem('정답'+(i+1))) {
+
+            a[i] =1
+            
+
+            localStorage.setItem('채점'+(i+1),'O')
+
+        }
+        else {
+
+            a[i] =0
+            
+            localStorage.setItem('채점'+(i+1),'X')
+        }
+    }
+
+
+
+
+
+    return (
+        <>
+            <div className="card" style={{fontSize:'30px', textAlign:"center"}} >
+                <div className='card-header'>
+                    -채점표-            
+                <div className='card-body'>
+                    <h3 className='card-title'>이름 : {localStorage.getItem('name')}</h3>
+                    
+
+                    <p className='card-text'>Quiz 1 : {localStorage.getItem('채점1')}</p>
+                    <p className='card-text'>Quiz 2 : {localStorage.getItem('채점2')}</p>
+                    <p className='card-text'>Quiz 3 : {localStorage.getItem('채점3')}</p>
+                    <p className='card-text'>Total Score : {a[0] + a[1] + a[2]}</p>
+                </div>
+                <div style={{marginTop:'100px'}}className="Box text-center">
+                    <img src={tr} alt="수고" />
+       
+                </div>
+                </div>
+            </div>
+        </>
+
+    )
+}
+
+export default End;
+

src/Home.js

+import bg from './img_study.jpg'
+import React, { useState } from 'react'
+import { Redirect } from 'react-router-dom';
+
+
+function Home() {
+    const [name, setName] = useState('')
+    const [done, setDone] = useState(false)
+
+    const handleChange = (event) => {
+        setName(event.target.value)
+    }
+
+    function checking(event) {
+        if (!name) {
+            alert('이름을 입력하세요')
+        }
+        else {
+            alert('입력하신 이름은' + name + '입니다.')
+            localStorage.setItem('name', name)
+            setDone(true)
+        }
+    }
+
+    return (
+        <>
+            {done ? <Redirect to='/quiz' /> : ''}
+            <div style={{ backgroundImage: 'url(' + bg + ')', backgroundColor: "grey", backgroundSize: "100%", width: "100%", height: "880px", backgroundRepeat: 'no-repeat' }}>
+                {/* <div className="Main"></div> */}
+
+                <div className="Box">
+                    <div className="Name" style={{ fontSize: '30px', position: "absolute", top: "330px", left: "38%" }}>
+                        이름을 입력하세요
+                        <input style={{ marginLeft: '30px', inlineSize: '200px', blockSize: '40px', fontSize: '40px' }} onChange={handleChange} />
+                        <div className='Box2'>
+                            <button style={{ marginTop: '35%', blockSize: '100px', inlineSize: '200px', fontSize: '35px' }} className="QuizStart" onClick={checking}>Quiz Start !</button>
+                        </div>
+                    </div>
+                    {/* localStorage를 사용해야는지 localstorage를 사용해야하는지 */}
+                </div>
+
+                <div>계산수학</div>
+
+
+            </div>
+        </>
+
+    )
+}
+
+export default Home;
+

src/Quiz.css

+.Main {
+    background: gray;
+    background-image: url('');
+    display: inline-block;
+    border: 3px solid black;
+    width: 750px;
+    height: 180px;
+    text-align: center;
+    margin-left: 410px;
+    margin-top: 10px;
+    font-size: 120px;
+    font-family: cursive;
+    color : greenyellow;
+    text-shadow :
+    -3px -3px 0 #000, /* 왼쪽 위 그림자 */
+    3px -3px 0 #000, /* 오른쪽 위 그림자 */
+    -3px 3px 0 #000, /* 왼쪽 아래 그림자 */
+    3px 3px 0 #000; /* 오른쪽 아래 그림자 */
+
+}
+
+/* .Name {} */
+
+.Box {
+    text-align: center;
+    margin: 0 auto;
+    margin-top: 75px;
+}
+
+.QuizStart {
+    margin: 30px;
+    margin-left: 650px;
+    margin-top: 150px;
+    margin-bottom: 200px;
+    width: 220px;
+    height: 50px;
+    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
+    font-size: 20px;
+    letter-spacing: 3px;
+}
+
+.card{
+    text-align: center;
+    margin: 100px;
+    font-size: 10px;
+
+}
\ No newline at end of file

src/Quiz.js

+import React, { useState } from 'react'
+import { Link } from 'react-router-dom';
+import Timer from 'react-compound-timer'; // 타이머쓰기위해 import
+import logo from './img_question.png'
+import fight from './img_quiz.png'
+
+const QnA = [
+    { Q: "6 X 4 = ?", Choose: [6, 12, 18, 24], A: "4", N: 1 },
+    { Q: "3 + 3 = ?", Choose: [2, 4, 6, 8], A: "3", N: 2 },
+    { Q: "3 - 1 = ?", Choose: [1, 2, 3, 4], A: "2", N: 3 }
+]
+
+
+
+function Quiz() {
+    let [question, setQuestion] = useState({
+        ...QnA[0],
+        i: 0,
+        page: 0,
+    })
+    let [selected, setSelected] = useState("")  //선택한 답을 보여줄 것들
+
+    function handleQuestion() {
+        setQuestion({ ...QnA[question.i + 1], i: question.i + 1, page: question.page + 1 })
+    }
+
+    let handleChange = (ev) => {
+        ev.preventDefault()  //새로고침 안되도록
+        setSelected(ev.target.value)  //selected값 변경
+
+        let checked_number = ev.target.id;
+
+                localStorage.setItem('답'+(question.N), Number(checked_number)+1)
+                localStorage.setItem('정답' + (question.N), QnA[question.N-1].A)
+                
+    }
+    return (
+        <>
+            <div style={{ fontSize: '80px', marginBottom: '100px', textAlign: "center", backgroundColor: 'yellow' }}>미적분학 퀴즈</div>
+            <img src={fight} style={{ position: "absolute", left: "1050px", top: '200px' }} alt="lion" />
+            <div className="Quiz" >
+                <h1><img src={logo} style={{ marginLeft: "450px" }} width='75' height='75' alt='question' /> <span style={{ fontSize: "75px", marginLeft: "30px" }}>{question.Q}</span></h1>
+                {/* <div style={{ marginTop: "30px", marginBottom: "30px", marginLeft:'450px', fontSize:'40px' }}>정답을 선택하세요</div> */}
+
+                <div>
+                    <form>
+                        {question.Choose.map((a, index) =>
+                            <div key={index}>
+                                <input type="radio" name='answer' id={index} value={a} onClick={handleChange} style={{ marginLeft: "475px", width: "25px", height: "25px" }}  />
+                                <label htmlFor={a} style={{ fontSize: "40px", marginLeft: "22px" }}>{a}</label>
+                            </div>
+                        )}
+                        <input hidden type="submit" value="확인" />    {/*버튼 숨김*/}
+                    </form>
+                    <p style={{ fontSize: "40px", marginLeft: "480px" }}>Answer :<span style={{ color: "green", fontWeight: "bold", fontSize: "90px", marginLeft: "30px" }}> {selected}</span>  {/* 선택한 값 보여줌 */}<span style={{ marginLeft: "50px" }}>            {(question.page === QnA.length - 1)
+                        ? <Link to="/end">제출</Link>
+                        : <button type="button" onClick={handleQuestion} style={{ width: "85px", height: "40px" }} >다음</button>
+
+                    }</span>
+                    </p>
+                </div>
+
+
+
+
+
+                {/* 마지막 질문일 경우 /end페이지로 이동, 그렇지 않을경우는 this.handleQuestion발생 */}
+                {/* {(question.page === QnA.length - 1)
+                ? <Link to="/end">제출</Link>
+                : <button type="button" onClick={handleQuestion} >다음</button>
+
+            } */}
+
+                {/* <input onKeyPress="this.enterkey()"/> */}
+
+
+                <p style={{ textAlign: "center", fontSize: "30px", color: "crimson" }}>
+                    <Timer
+                        initialTime={3600000}
+                        direction="backward"
+                        checkpoints={[
+                            {
+                                time: 0,
+                                callback: <Link to="/end">제출</Link>
+                                //  history.go(1)
+                            }
+                        ]}
+                    >
+                        {() => (
+                            <>
+                                <Timer.Minutes /> : <Timer.Seconds></Timer.Seconds> / 60 : 00                        </>
+                        )}
+                    </Timer>     {/* npm i react-compound-timer */}
+                </p>
+
+            </div>
+        </>
+    )
+
+
+
+}
+
+
+export default Quiz;
\ No newline at end of file

src/index.css

+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;
+}

src/index.js

+import React from 'react';
+import ReactDOM from 'react-dom';
+import './index.css';
+import App from './App';
+// import Quiz from './Quiz';
+import * as serviceWorker from './serviceWorker';
+
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  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();

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>

src/preQuiz.js

+import React from 'react';
+// import logo from './logo.svg';
+import './Quiz.css';
+
+
+const question = [
+  { Q: "6 X 4 ?", Choose: [6, 12, 18, 24], A: "" },
+  { Q: "3 + 3 ?", Choose: [2, 4, 6, 8], A: "" },
+  { Q: "3 - 1 ?", Choose: [1, 2, 3, 4], A: "" }
+]
+
+class Quiz extends React.Component {
+  constructor(props) {
+    super(props)
+    // this.setAnswer = this.setAnswer.bind(this)
+    this.setQuestion = this.setQuestion.bind(this)
+    this.ShowQuiz = this.ShowQuiz.bind(this)
+    this.answerbox = this.answerbox.bind(this)
+    this.state = {
+      ...question[0],
+      i: 0,
+      page: 0,
+    }
+    // this.textInput = React.createRef()
+        
+  }
+  ShowQuiz() {
+    this.setState({ page: 1 })
+  }
+  setQuestion() {
+    //값이 입력되지 않은채로 넘겨졌을 때 문제 해결 해야 함-sj-
+    this.setState({ ...question[this.state.i + 1], i: this.state.i + 1 })
+
+  }
+//answerbox - answer박스의 값을 네임리스트로 받아와서 값을 localstorage에 저장 
+  answerbox() {
+    let answers = document.getElementsByName('answer');
+    let count = answers.length
+    // var checked_index = -1;
+    var checked_value = '';
+
+    for (var i = 0; i < count; i++) {
+      if (answers[i].checked) {
+        // checked_index = i;
+        checked_value = answers[i].value;
+        localStorage.setItem('answer-'+i, checked_value)
+      }
+    }
+    // alert('선택된 항목 인덱스: ' + checked_index + '\n선택된 항목 값: ' + checked_value);
+
+
+    // if (document.getElementsByName("answer")[i].checked === true) {
+      
+    //   alert(document.getElementsByName("answer")[i].value);
+    // }
+
+
+  }
+
+  // setAnswer(e) {
+  //   question[this.state.i]["A"] = e.target.value
+  //   this.setState({ v: e.target.value })
+  //   console.log(this.state)
+  //   console.log(question)
+  // }
+  render() {
+    if (this.state.page === 1) {
+      this.answerbox()
+      if (this.state.i === question.length) {
+        return (
+          <div>
+            <h2>수고하셨습니다!</h2>
+          </div>
+        )
+      }
+      else {
+        return (
+          <div className="Quiz">
+            <h2>Q:{this.state.Q}</h2>
+            {this.state.Choose.map((a) =>
+              <div>
+                <input type="radio" name='answer' id={a} value={a} /*ref={this.textInput}*/ /> 
+                <label for={a}>{a}</label>
+                
+
+              </div>)}
+            <div className="App">
+              정답을 입력하세요
+            </div>
+            {/* <div>
+              <input type="text" value={this.state.v} name="A" onChange={this.setAnswer} />
+            </div> */}
+            <button type="button" onClick={setTimeout(this.setQuestion, 2000)}>다음</button>
+          </div>
+        )
+      }
+    }
+    else {
+      return (
+        <div className="Box">
+          <div className="Main">
+            <h1> Calculus</h1>
+          </div>
+          <div className="Name">
+            이름을 입력하세요
+          <input onChange={(event) => { console.log(event.target.value) }} />
+          </div>
+          <button className="QuizStart" onClick={this.ShowQuiz}>Quiz Start !</button>
+        </div>
+
+      )
+    }
+  }
+}
+
+export default Quiz;