javascript-mini-game/ResponseSpeedTest.html at main · youngsikkk/javascript-mini-game · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    #screen {
      width: 90vw;
      height: 70vh;
      text-align: center;
      user-select: none;
    }
    #screen.waiting {
      background-color: aqua;
    }
    #screen.ready {
      background-color: red;
      color: white;
    }
    #screen.now {
      background-color: greenyellow;
    }
    #wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    #btn {
      width: 50vw;
      margin-top: 20px;
      border: none;
      height: 5vh;
      cursor: pointer;
      display: none;
    }
    #btn:hover {
      opacity: .8;
    }
  </style>
</head>
<body>
  <div id="wrapper">
    <h2>반응속도 테스트</h2>
    <div id="screen" class="waiting">클릭해서 시작하세요</div>
    <div id="result"></div>
    <button id="btn">재측정</button>
  </div>
<script>
  const $screen = document.querySelector("#screen");
  const $result = document.querySelector("#result");
  const $btn = document.querySelector("#btn");
  const replay = () => {
    window.location.reload();
  }
  $btn.addEventListener("click", replay);
  const timeSet = [];
  let startTime = 0;
  let endTime = 0;
  let average = 0;
  let isRun = false;

  const handleClick = () => {
    $screen.className = "now";
    $screen.textContent = "클릭해주세요";
    startTime = new Date().getTime();
    isRun = true;
  }
  const resultHandler = async() => {
    endTime = new Date().getTime();
    timeSet.push(endTime-startTime);
    const newResult = document.createElement("span");
    const lineBreak = document.createElement("br");
    newResult.textContent = `반응속도는 ${timeSet[timeSet.length-1]}입니다.`;
    $result.appendChild(newResult);
    $result.appendChild(lineBreak);
    isRun = false;
  }

  const handleClickWaiting = () => {
    if ($screen.className === "ready") return;
    if (timeSet.length < 4) {
      $screen.className = "ready";
      $screen.textContent = "초록불이 될때까지 기다리세요"
      let timer = setTimeout(handleClick ,(Math.random()*5)*1000);
      if (isRun) resultHandler();
    } else {
      for (let i = 0; i < timeSet.length; i++) {
        average += timeSet[i];
      }
      const $average = document.createElement("span");
      const lineBreak = document.createElement("br");
      $average.textContent = `평균 반응 속도는 ${parseInt(average/timeSet.length)}입니다.`;
      $result.appendChild($average);
      $result.appendChild(lineBreak);
      $screen.removeEventListener("click", handleClickWaiting);
      $btn.style.display = "block";
    }
  }

  $screen.addEventListener("click", handleClickWaiting);

  // if (timeSet.length > 4) {
  //  timeSet.reduce((sum, currValue) => {
  //    return sum + currValue;
  //  }, average);
  //  $result.textContent = average;
  // }


</script>
</body>
</html>