theme-clock
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<style>
@import url('https://fonts.googleapis.com/css?family=Heebo:300&display=swap');
* {
box-sizing: border-box;
}
:root {
--primary-color: #000;
--secondary-color: #fff;
}
html {
transition: all 0.5s ease-in;
}
html.dark {
--primary-color: #fff;
--secondary-color: #333;
}
html.dark {
background-color: #111;
color: var(--primary-color);
}
body {
font-family: 'Heebo', sans-serif;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
overflow: hidden;
margin: 0;
}
.toggle {
cursor: pointer;
background-color: var(--primary-color);
color: var(--secondary-color);
border: 0;
border-radius: 4px;
padding: 8px 12px;
position: absolute;
top: 100px;
}
.toggle:focus {
outline: none;
}
.clock-container {
display: flex;
flex-direction: column;
justify-content: space-between;
align-items: center;
}
.clock {
position: relative;
width: 200px;
height: 200px;
}
.needle {
background-color: var(--primary-color);
position: absolute;
top: 50%;
left: 50%;
height: 65px;
width: 3px;
transform-origin: bottom center;
transition: all 0.5s ease-in linear;
}
.needle.hour {
transform: translate(-50%, -100%) rotate(0deg);
}
.needle.minute {
transform: translate(-50%, -100%) rotate(0deg);
height: 100px;
}
.needle.second {
transform: translate(-50%, -100%) rotate(0deg);
height: 100px;
background-color: #e74c3c;
}
.center-point {
background-color: #e74c3c;
width: 10px;
height: 10px;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
border-radius: 50%;
}
.center-point::after {
content: '';
background-color: var(--primary-color);
width: 5px;
height: 5px;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
border-radius: 50%;
}
.time {
font-size: 60px;
}
.date {
color: #aaa;
font-size: 14px;
letter-spacing: 0.3px;
text-transform: uppercase;
}
.date .circle {
background-color: var(--primary-color);
color: var(--secondary-color);
border-radius: 50%;
height: 18px;
width: 18px;
display: inline-flex;
align-items: center;
justify-content: center;
line-height: 18px;
transition: all 0.5s ease-in;
font-size: 12px;
}
</style>
<title>Theme Clock</title>
</head>
<body>
<!-- Inspired by this dribbble shot https://dribbble.com/shots/5958443-Alarm-clock -->
<button class="toggle">Dark mode</button>
<div class="clock-container">
<div class="clock">
<div class="needle hour"></div>
<div class="needle minute"></div>
<div class="needle second"></div>
<div class="center-point"></div>
</div>
<div class="time"></div>
<div class="date"></div>
</div>
<script>const hourEl = document.querySelector('.hour')
const minuteEl = document.querySelector('.minute')
const secondEl = document.querySelector('.second')
const timeEl = document.querySelector('.time')
const dateEl = document.querySelector('.date')
const toggle = document.querySelector('.toggle')
const days = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
const months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
toggle.addEventListener('click', (e) => {
const html = document.querySelector('html')
if (html.classList.contains('dark')) {
html.classList.remove('dark')
e.target.innerHTML = 'Dark mode'
} else {
html.classList.add('dark')
e.target.innerHTML = 'Light mode'
}
})
function setTime() {
const time = new Date();
const month = time.getMonth()
const day = time.getDay()
const date = time.getDate()
const hours = time.getHours()
const hoursForClock = hours >= 13 ? hours % 12 : hours;
const minutes = time.getMinutes()
const seconds = time.getSeconds()
const ampm = hours >= 12 ? 'PM' : 'AM'
hourEl.style.transform = `translate(-50%, -100%) rotate(${scale(hoursForClock, 0, 12, 0, 360)}deg)`
minuteEl.style.transform = `translate(-50%, -100%) rotate(${scale(minutes, 0, 60, 0, 360)}deg)`
secondEl.style.transform = `translate(-50%, -100%) rotate(${scale(seconds, 0, 60, 0, 360)}deg)`
timeEl.innerHTML = `${hoursForClock}:${minutes < 10 ? `0${minutes}` : minutes} ${ampm}`
dateEl.innerHTML = `${days[day]}, ${months[month]} <span class="circle">${date}</span>`
}
// StackOverflow https://stackoverflow.com/questions/10756313/javascript-jquery-map-a-range-of-numbers-to-another-range-of-numbers
const scale = (num, in_min, in_max, out_min, out_max) => {
return (num - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
setTime()
setInterval(setTime, 1000)
</script>
</body>
</html>