GeekyDeaks · November 7, 2022 12:12
diff --git a/stopwatch.html b/stopwatch.html

 <html>
 <head>
  <title>Stopwatch</title>

  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Overpass+Mono&display=swap" rel="stylesheet">

  <style>
    html { height: 100%; }
    body { 
      font-family: 'Arial', sans-serif; margin: 0em; 
      width: 100%;
    }
    #app {
      width: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    button {
      display: inline-block;
      background-color: #555;
      margin: 0.2em;
      padding: 0.25em 0.75em 0.25em 0.75em;
      border-radius: .25em;
      color: white;
      font-size: 1.25em;
    }
    button:disabled {
      color: lightgray;
      background-color: #777;
    }
    .buttonbox {
      width: auto;
      display: flex;
      align-items: center;
      flex-direction: row;
    }
    .timerbox {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
    }
    #elapsedtime {
      font-family: 'Overpass Mono', monospace;
      font-size: 1.5em;
      color: #555;

    }
    #splittime {
      font-family: 'Overpass Mono', monospace;
      font-size: 1.75em;
      font-weight: bold;
      padding-top: 0.25em;
    }
    table { border-collapse: collapse; width: 100%; }
    tr:nth-child(even) { background: #FFF }
    tr:nth-child(odd) { background: #EEE }
    tr:first-child {font-weight: bold; background: #BBB }
    table, th, td { border: 1px solid gray; padding: 5px }
    td { font-family: 'Overpass Mono', monospace; }
  </style>
 </head>
 <body>
  <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>

  <div id="app">  
    <div class="timerbox">
      <div id="splittime">{{ splitTime }}</div>
      <div id="elapsedtime">{{ elapsedTime }}</div>
    </div>
    <div class="buttonbox">
      <button id="startbutton" class="button" @click="start" v-if="!timer">start</button>
      <button id="stopbutton" class="button" @click="stop" v-if="timer">stop</button>
      <button id="splitbutton" class="button" @click="split" :disabled="!timer">split</button>
      <button id="resetbutton" class="button" @click="reset">reset</button>
    </div>
    <table>
      <tr><th>lap</th><th>split</th><th>elapsed</th></tr>
      <tr v-for="lap in laps">
        <td>{{ lap.lap }}</td>
        <td>{{ lap.splitTime }}</td>
        <td>{{ lap.elapsedTime }}</td>
      </tr>
    </table>
  </div>

  <script>
    const { createApp } = Vue

    function createTimer() {

      let last = 0
      let total = 0

      return {
        start(now = Date.now()) {
          last = now
        },
        update(now = Date.now()) {
          total += now - last
          last = now
        },
        toString() {
          let ms = total % 1000
          let sec = Math.floor(total % 60000 / 1000)
          let min = Math.floor(total % 3600000 / 1000 / 60)
          let hour = Math.floor(total / 1000 / 3600)

          return hour.toString().padStart(2, '0') + ':' 
                + min.toString().padStart(2, '0') + ':' 
                + sec.toString().padStart(2, '0') + '.'
                + ms.toString().padStart(3, '0')
        }
      }
    }

    let app = createApp({
      data() {
        return {
          laps: [],
          timer: undefined,
          elapsedTimer: createTimer(),
          elapsedTime: '',
          splitTimer: createTimer(),
          splitTime: ''
        }
      },
      methods: {
        update(now = Date.now()) {
          this.elapsedTimer.update(now)
          this.elapsedTime = this.elapsedTimer.toString()
          this.splitTimer.update(now)
          this.splitTime = this.splitTimer.toString()
        },
        start() {
          if(this.timer) return
          let now = Date.now()
          this.elapsedTimer.start(now)
          this.splitTimer.start(now)
          this.timer = setInterval(this.update.bind(this), 10)
        },
        split() {
          if(!this.timer) return
          // add the latest times to the laps
          let now = Date.now()
          this.update(now)
          let lap = this.laps.length + 1
          this.laps.unshift({ lap, elapsedTime: this.elapsedTime, splitTime: this.splitTime })
          this.splitTimer = createTimer()
          this.splitTimer.start(now)
        },
        stop() {
          if(!this.timer) return
          clearInterval(this.timer)
          this.timer = undefined
          this.update()
        },
        reset() {
          this.stop()
          this.elapsedTimer = createTimer()
          this.splitTimer = createTimer()
          this.laps = []
          this.update(0)
        }
      },
      mounted() {
        this.update(0)
      }
    }).mount('#app')
  </script>
 </body>
 </html>

	<html>
	<head>
	<title>Stopwatch</title>

	<link rel="preconnect" href="https://fonts.googleapis.com">
	<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
	<link href="https://fonts.googleapis.com/css2?family=Overpass+Mono&display=swap" rel="stylesheet">

	<style>
	html { height: 100%; }
	body {
	font-family: 'Arial', sans-serif; margin: 0em;
	width: 100%;
	}
	#app {
	width: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
	}
	button {
	display: inline-block;
	background-color: #555;
	margin: 0.2em;
	padding: 0.25em 0.75em 0.25em 0.75em;
	border-radius: .25em;
	color: white;
	font-size: 1.25em;
	}
	button:disabled {
	color: lightgray;
	background-color: #777;
	}
	.buttonbox {
	width: auto;
	display: flex;
	align-items: center;
	flex-direction: row;
	}
	.timerbox {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
	}
	#elapsedtime {
	font-family: 'Overpass Mono', monospace;
	font-size: 1.5em;
	color: #555;

	}
	#splittime {
	font-family: 'Overpass Mono', monospace;
	font-size: 1.75em;
	font-weight: bold;
	padding-top: 0.25em;
	}
	table { border-collapse: collapse; width: 100%; }
	tr:nth-child(even) { background: #FFF }
	tr:nth-child(odd) { background: #EEE }
	tr:first-child {font-weight: bold; background: #BBB }
	table, th, td { border: 1px solid gray; padding: 5px }
	td { font-family: 'Overpass Mono', monospace; }
	</style>
	</head>
	<body>
	<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>

	<div id="app">
	<div class="timerbox">
	<div id="splittime">{{ splitTime }}</div>
	<div id="elapsedtime">{{ elapsedTime }}</div>
	</div>
	<div class="buttonbox">
	<button id="startbutton" class="button" @click="start" v-if="!timer">start</button>
	<button id="stopbutton" class="button" @click="stop" v-if="timer">stop</button>
	<button id="splitbutton" class="button" @click="split" :disabled="!timer">split</button>
	<button id="resetbutton" class="button" @click="reset">reset</button>
	</div>
	<table>
	<tr><th>lap</th><th>split</th><th>elapsed</th></tr>
	<tr v-for="lap in laps">
	<td>{{ lap.lap }}</td>
	<td>{{ lap.splitTime }}</td>
	<td>{{ lap.elapsedTime }}</td>
	</tr>
	</table>
	</div>

	<script>
	const { createApp } = Vue

	function createTimer() {

	let last = 0
	let total = 0

	return {
	start(now = Date.now()) {
	last = now
	},
	update(now = Date.now()) {
	total += now - last
	last = now
	},
	toString() {
	let ms = total % 1000
	let sec = Math.floor(total % 60000 / 1000)
	let min = Math.floor(total % 3600000 / 1000 / 60)
	let hour = Math.floor(total / 1000 / 3600)

	return hour.toString().padStart(2, '0') + ':'
	+ min.toString().padStart(2, '0') + ':'
	+ sec.toString().padStart(2, '0') + '.'
	+ ms.toString().padStart(3, '0')
	}
	}
	}

	let app = createApp({
	data() {
	return {
	laps: [],
	timer: undefined,
	elapsedTimer: createTimer(),
	elapsedTime: '',
	splitTimer: createTimer(),
	splitTime: ''
	}
	},
	methods: {
	update(now = Date.now()) {
	this.elapsedTimer.update(now)
	this.elapsedTime = this.elapsedTimer.toString()
	this.splitTimer.update(now)
	this.splitTime = this.splitTimer.toString()
	},
	start() {
	if(this.timer) return
	let now = Date.now()
	this.elapsedTimer.start(now)
	this.splitTimer.start(now)
	this.timer = setInterval(this.update.bind(this), 10)
	},
	split() {
	if(!this.timer) return
	// add the latest times to the laps
	let now = Date.now()
	this.update(now)
	let lap = this.laps.length + 1
	this.laps.unshift({ lap, elapsedTime: this.elapsedTime, splitTime: this.splitTime })
	this.splitTimer = createTimer()
	this.splitTimer.start(now)
	},
	stop() {
	if(!this.timer) return
	clearInterval(this.timer)
	this.timer = undefined
	this.update()
	},
	reset() {
	this.stop()
	this.elapsedTimer = createTimer()
	this.splitTimer = createTimer()
	this.laps = []
	this.update(0)
	}
	},
	mounted() {
	this.update(0)
	}
	}).mount('#app')
	</script>
	</body>
	</html>