ArpithaPK.github.io/index.html at main · ArpithaPK/ArpithaPK.github.io · 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>Stopwatch</title>
  <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
  <style>

    .container {
      margin-top: 50px;
    }

    #display {
      font-size: 2em;
      text-align: center;
      margin-bottom: 20px;
      color: #FFFFFF;
      background-color: #3498db;
      padding: 10px;
      border-radius: 5px;
    }

    .btn-group {
      text-align: center;
    }

    .btn-primary {
      background-color: #2ecc71;
      border-color: #2ecc71;
    }
    .btn-danger {
      background-color: #e74c3c;
      border-color: #e74c3c;
    }
    .btn-secondary {
      background-color: #f39c12;
      border-color: #f39c12;
    }
  </style>
</head>
<body>

<div class="container">

  <div id="display">00:00:00</div>

  <div class="btn-group">

    <button id="startBtn" class="btn btn-primary" onclick="startTimer()">Start</button>

    <button id="stopBtn" class="btn btn-danger" onclick="stopTimer()" disabled>Stop</button>

    <button class="btn btn-secondary" onclick="reset()">Reset</button>
  </div>
</div>

<!-- JavaScript code -->
<script>
  let timer;
  let hours = 0;
  let minutes = 0;
  let seconds = 0;

  // Function to start the stopwatch
  function startTimer() {

    document.getElementById('startBtn').disabled = true;
    document.getElementById('stopBtn').disabled = false;
    // Start the timer
    timer = setInterval(updateTime, 1000);
  }

  // Function to stop the stopwatch
  function stopTimer() {
    // Enable the start button and disable the stop button
    document.getElementById('startBtn').disabled = false;
    document.getElementById('stopBtn').disabled = true;
    // Stop the timer
    clearInterval(timer);
  }

  // Function to update the stopwatch time
  function updateTime() {

    seconds++;
    // If seconds reach 60, reset seconds and increment minutes
    if (seconds === 60) {
      seconds = 0;
      minutes++;
      // If minutes reach 60, reset minutes and increment hours
      if (minutes === 60) {
        minutes = 0;
        hours++;
      }
    }

    document.getElementById('display').textContent = pad(hours) + ':' + pad(minutes) + ':' + pad(seconds);
  }

  // Function to reset the stopwatch
  function reset() {

    clearInterval(timer);
    // Enable the start button and disable the stop button
    document.getElementById('startBtn').disabled = false;
    document.getElementById('stopBtn').disabled = true;
    // Reset hours, minutes, seconds, and display
    hours = minutes = seconds = 0;
    document.getElementById('display').textContent = '00:00:00';
  }

  // Function to pad single-digit numbers with leading zeros
  function pad(val) {
    return val > 9 ? val : '0' + val;
  }
</script>

</body>
</html>