Created
September 17, 2023 06:00
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Simple HTML page that shows a countdown in the center, with nudges when it's lower than 2 minutes.
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<!doctype html> | |
<html> | |
<head> | |
<title>Test</title> | |
<style> | |
body { | |
color: white; | |
background: black; | |
font-family: "Helvetica", Arial, sans-serif; | |
} | |
* { | |
padding: 0; | |
margin: 0; | |
box-sizing: border-box; | |
} | |
.container { | |
display: flex; | |
flex-direction: column; | |
justify-content: center; | |
align-items: center; | |
width: 100vw; | |
height: 100vh; | |
} | |
#cta, #timer { | |
text-align: center; | |
max-width: 50vw; | |
} | |
#cta { | |
font-size: 4rem; | |
} | |
#timer { | |
font-size: 5rem; | |
} | |
.nudge { | |
animation: nudge 2s infinite; | |
} | |
.red { | |
color: #6e1b00; | |
} | |
@keyframes nudge { | |
0% { | |
transform: scale(1) | |
} | |
5% { | |
transform: scale(1.25) | |
} | |
10% { | |
transform: scale(1) | |
} | |
15% { | |
transform: scale(1.25) | |
} | |
20% { | |
transform: scale(1) | |
} | |
} | |
</style> | |
</head> | |
<body> | |
<div class="container"> | |
<p id="cta">Kurze Pause</p> | |
<div id="timer"></div> | |
</div> | |
<script> | |
function getQueryVariable(variable) { | |
var query = window.location.search.substring(1); | |
var vars = query.split('&'); | |
for (var i = 0; i < vars.length; i++) { | |
var pair = vars[i].split('='); | |
if (decodeURIComponent(pair[0]) == variable) { | |
return decodeURIComponent(pair[1]); | |
} | |
} | |
} | |
let targetTime = new Date() | |
targetTime.setHours(12) | |
targetTime.setMinutes(0) | |
targetTime.setSeconds(0) | |
targetTime.setMilliseconds(0) | |
let targetStr = getQueryVariable("until") | |
if (targetStr) { | |
let parts = targetStr.split(":") | |
targetTime.setHours(parts[0]) | |
targetTime.setMinutes(parts[1] || 0) | |
targetTime.setSeconds(parts[2] || 0) | |
} | |
let timerEl = document.getElementById("timer") | |
let ctaEl = document.getElementById("cta") | |
function leading0(val) { | |
if (val >= 10) return val + "" | |
else return `0${val}` | |
} | |
function updateCountdown() { | |
let diff = targetTime - new Date() | |
let absDiff = Math.abs(diff) | |
let millis = absDiff % 1000 | |
let seconds = Math.floor(absDiff / 1000) % 60 | |
let minutes = Math.floor(absDiff / (60 * 1000)) % 60 | |
let hours = Math.floor(absDiff / (60 * 60 * 1000)) | |
timerEl.innerHTML = `${leading0(hours)}:${leading0(minutes)}:${leading0(seconds)}` | |
ctaEl.innerHTML = `Pause bis ${leading0(targetTime.getHours())}:${leading0(targetTime.getMinutes())}` | |
if (diff <= 2 * 60 * 1000 && diff >= 0) { | |
ctaEl.innerHTML = `Gleich geht es weiter!<br>Bitte such' dir jetzt einen Platz.` | |
timerEl.classList.add("nudge") | |
} else if (diff < 0) { | |
ctaEl.innerHTML = "Es geht weiter!" | |
ctaEl.classList.add("nudge") | |
timerEl.classList.add("nudge") | |
timerEl.classList.add("red") | |
} | |
requestAnimationFrame(updateCountdown) | |
} | |
updateCountdown() | |
</script> | |
</body> | |
</html> |
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