StopWatch/index.html at main · 0BiSu0/StopWatch · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    body {
      padding-top: 150px;
      font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
      height: 100%;
    }

    .wrapper {
      width: 800px;
      margin: 30px auto;
      color: #fff;
      text-align: center;
    }
    h1, h2, h3 {
      font-family: "Roboto", sans-serif;
      font-weight: 100;
      font-size: 2.6em;
      text-transform: uppercase;
    }
    #seconds, #tens {
      font-size: 2em;
    }
    button {
      -moz-border-radius: 5px;
      -webkit-border-radius: 5px;
      border-radius: 5px;
      -khtml-border-radius: 5px;
      background: #ffa600;
      color: #fff;
      border: solid 1px #fff;
      text-decoration: none;
      cursor: pointer;
      font-size: 1.2em;
      padding: 18px 10px;
      width: 180px;
      margin: 10px;
      outline: none;
    }
    button:hover {
      -webkit-transition: all 0.5s ease-in-out;
      -moz-transition: all 0.5s ease-in-out;
      transition: all 0.5s ease-in-out;
      background: #fff;
      border: solid 1px #fff;
      color: #ffa600;
    }
    .fieldset{
      background-color: yellowgreen;
      text-align: center;
      margin: auto;
      width: 30%;
      padding-top: 30px;
    }
  </style>
</head>
<body>
<fieldset class="fieldset">
<div class="wrapper">
  <h1>Stopwatch</h1>
  <p><span id="seconds">00</span>:<span id="tens">00</span></p>
  <button id="button-start">Start</button>
  <button id="button-stop">Stop</button>
  <button id="button-reset">Reset</button>
</div>
<script>
  window.onload = function () {
    var seconds = 00;
    var tens = 00;
    var appendTens = document.getElementById("tens")
    var appendSeconds = document.getElementById("seconds")
    var buttonStart = document.getElementById('button-start');
    var buttonStop = document.getElementById('button-stop');
    var buttonReset = document.getElementById('button-reset');
    var Interval ;
    buttonStart.onclick = function() {
      clearInterval(Interval);
      Interval = setInterval(startTimer, 10);
    }
    buttonStop.onclick = function() {
      clearInterval(Interval);
    }
    buttonReset.onclick = function() {
      clearInterval(Interval);
      tens = "00";
      seconds = "00";
      appendTens.innerHTML = tens;
      appendSeconds.innerHTML = seconds;
    }
    function startTimer () {
      tens++;
      if(tens <= 9){
        appendTens.innerHTML = "0" + tens;
      }
      if (tens > 9){
        appendTens.innerHTML = tens;
      }
      if (tens > 99) {
        console.log("seconds");
        seconds++;
        appendSeconds.innerHTML = "0" + seconds;
        tens = 0;
        appendTens.innerHTML = "0" + 0;
      }
      if (seconds > 9){
        appendSeconds.innerHTML = seconds;
      }
    }
  }
</script>
</fieldset>
</body>
</html>