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September 1, 2022 18:32
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Javascript Clock Example
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<!DOCTYPE html> | |
<title>Javascript Clock Example</title> | |
<style> | |
body { | |
font-family: Monospace; | |
font-weight: 600; | |
font-size: calc(100vw / 5.5); | |
-webkit-text-stroke: calc(100vw / 200) #000; | |
width: 100vw; | |
height: 100vh; | |
margin: 0; | |
display: flex; | |
align-items: center; | |
justify-content: center; | |
} | |
</style> | |
<p id="clock"> | |
<script> | |
let clock = document.getElementById( `clock` ); | |
let click = 0; | |
document.body.addEventListener( `click`, () => click++ ); | |
const updateClock = () => { | |
let date = new Date(); | |
let time = [ ( date.getHours() + click ) % 24, date.getMinutes(), date.getSeconds() ]; | |
let hue = ( time[ 0 ] * 3600 + time[ 1 ] * 60 + time[ 2 ] ) / 240; | |
let cos = Math.cos( hue * Math.PI / 180 ); | |
clock.innerText = time.map( n => String( n ).padStart( 2, `0` ) ).join( `:` ); | |
let gradX = hue * 100 / 360; | |
let gradY = 50 + 40 * cos; | |
let gradLum = 50 - 25 * cos; | |
let color1 = `hsl( ${ hue - 30 } 100% 50%)`; | |
let color2 = `hsl( ${ hue + 30 } 100% ${ gradLum }%)`; | |
document.body.style.color = `hsl( ${ hue + 180 } 100% 50%)`; | |
document.body.style.backgroundColor = `hsl( ${ hue } 100% 50%)`; | |
document.body.style.backgroundImage = `radial-gradient(circle at left ${ gradX }vw top ${ gradY }vh, #FFF 0%, ${ color1 } 5%, ${ color2 } 100%)`; | |
}; | |
setInterval( updateClock, 1000 ); | |
</script> |
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