Created
January 26, 2018 23:23
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<html> | |
<head> | |
<title>Confetti</title> | |
<style> | |
#confettotainer { | |
position: absolute; | |
width: 100vw; | |
height: 100vh; | |
overflow: hidden; | |
} | |
.confetto { | |
border-radius: 50%; | |
position: absolute; | |
box-shadow: 0px 1px 2px rgba(0, 0, 0, 0.15); | |
width: 8rem; | |
height: 8rem; | |
margin-top: -4rem; | |
margin-left: -4rem; | |
animation-name: dropItBaby; | |
animation-duration: 0.2s; | |
animation-fill-mode: forwards; | |
animation-iteration-count: 1; | |
} | |
@keyframes dropItBaby { | |
from { | |
opacity: 0; | |
} | |
to { | |
opacity: 1; | |
} | |
} | |
</style> | |
</head> | |
<body> | |
<div id="confettotainer"></div> | |
</body> | |
<script> | |
const colours = [ | |
['rgb(250, 196, 255)', 'rgb(249, 186, 255)'], | |
['rgb(252, 229, 58)', 'rgb(245, 217, 10)'], | |
['rgb(72, 147, 239)', 'rgb(40, 132, 245)'] | |
]; | |
const confettoFactor = 5000; | |
const maxConfetti = (window.innerWidth * window.innerHeight) / confettoFactor; | |
const confettotainer = document.getElementById('confettotainer'); | |
const addConfetto = () => { | |
const confetto = document.createElement('div'); | |
const [lighterColour, darkerColour] = colours[Math.floor(Math.random() * colours.length)]; | |
confetto.className = 'confetto'; | |
confetto.style.left = randomPos() + 'vw'; | |
confetto.style.top = randomPos() + 'vh'; | |
confetto.style.backgroundImage = getGradientFor(lighterColour, darkerColour); | |
confettotainer.appendChild(confetto); | |
} | |
const getGradientFor = (lighterColour, darkerColour) => { | |
const degree = Math.random() * 360; | |
return `linear-gradient(${degree}deg, ${lighterColour} 30%, ${darkerColour} 70%)`; | |
}; | |
const randomPos = () => Math.random() * 100; | |
const removeConfetto = () => { | |
if (confettotainer.childElementCount > maxConfetti) { | |
confettotainer.removeChild(confettotainer.firstChild); | |
} | |
} | |
const dropConfetto = () => { | |
addConfetto(); | |
removeConfetto(); | |
setTimeout(dropConfetto, Math.random() * 3000); | |
} | |
dropConfetto(); | |
</script> | |
</html> |
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