<style>
html,body
{
background: #292A2B;
height: 300vh;
}
.christmas_lights_wrapper
{
position: fixed;
top:0;
left:50%;
transform: translateX(-50%);
}
.line
{
position: relative;
width: 130vw;
height: 35vw;
border-bottom: 2px solid black;
border-radius: 50%;
top: 0;
left: 50%;
transform: translate(-50%,-80%);
margin-bottom: -32.5vw;
}
.bulb_wrapper
{
white-space: nowrap;
position: relative;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
display: flex;
justify-content: center;
}
.bulb::before
{
content: '';
position: absolute;
width: 100%;
height: 100%;
border-left: 7px solid #586266;
border-radius: 25%;
}
.bulb
{
position: relative;
display: inline-block;
width: 2vw;
height: 2vw;
margin: 1vw;
background: #394347;
border-radius: 25%;
transform-origin: center top;
box-sizing: border-box;
}
.bulb.swing
{
animation: swing 0.5s ease-in-out;
}
.bulb .glow
{
display: block;
position: relative;
width: 3vw;
height: 3vw;
border-radius: 50%;
background: #fff389;
left: 50%;
transform: translate(-50%,-35%);
top: 100%;
transition: background 0.2s ease-in-out, filter 0.2s ease-in-out;
}
.bulb .glas::before
{
content: '';
position: absolute;
width: 90%;
height: 90%;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
border: 9px solid rgba(0,0,0,0.2);
border-width: 0 0 7px 7px;
border-radius: 50%;
}
.bulb .glas
{
display: block;
position: relative;
width: 3vw;
height: 3vw;
margin-top: -3vw;
border-radius: 50%;
background: #fff389;
left: 50%;
transform: translate(-50%,-35%);
top: 100%;
transition: background 0.2s ease-in-out;
}
@keyframes swing
{
0% {transform: rotate(0deg);}
25% {transform: rotate(-30deg);}
50% {transform: rotate(30deg);}
70% {transform: rotate(-15deg);}
90% {transform: rotate(10deg);}
100% {transform: rotate(0deg);}
}
</style>
<script>
var bulbs = [];
var christmasLightsWrapper = document.createElement('div');
christmasLightsWrapper.classList.add('christmas_lights_wrapper');
document.body.appendChild(christmasLightsWrapper);
var line = document.createElement('div');
line.classList.add('line');
christmasLightsWrapper.appendChild(line);
var bulbWrapper = document.createElement('div');
bulbWrapper.classList.add('bulb_wrapper');
christmasLightsWrapper.appendChild(bulbWrapper);
function Bulb(pColor,pBulb,pGlas,pGlow)
{
this.offColor = {r: pColor.r-50,g: pColor.g-50, b:pColor.b-50};
this.onColor = {r: pColor.r+50,g: pColor.g+50, b:pColor.b+50};
this.color = {r: pColor.r,g: pColor.g, b:pColor.b};
this.bulb = pBulb;
this.glas = pGlas;
this.glow = pGlow;
this.on = true;
this.flick = function()
{
if(this.on)
{
this.glas.style.background = 'rgb('+this.offColor.r+','
+this.offColor.g+','
+this.offColor.b+')';
this.glow.style.background = 'rgb('+this.offColor.r+','
+this.offColor.g+','
+this.offColor.b+')';
this.glow.style.filter = 'blur(12px)';
this.on = false;
}
else
{
this.glas.style.background = 'rgb('+this.onColor.r+','
+this.onColor.g+','
+this.onColor.b+')';
this.glow.style.background = 'rgb('+this.onColor.r+','
+this.onColor.g+','
+this.onColor.b+')';
this.glow.style.filter = 'blur(4px)';
this.on = true;
}
};
};
for(var i=0; i < 24; i++)
{
var _bulb = document.createElement('div');
var _glow = document.createElement('span');
var _glas = document.createElement('span');
_bulb.classList.add('bulb');
_glow.classList.add('glow');
_glas.classList.add('glas');
_bulb.appendChild(_glow);
_bulb.appendChild(_glas);
bulbWrapper.appendChild(_bulb);
_bulb.style.top = Math.floor(line.clientHeight/7 * Math.sin(i*(180/23)*Math.PI/180))+"px";
var bulb = new Bulb({r:(i%2 === 0)?200:0,g:(i%2 !== 0) ? 200 : 0, b:0},/*r:Math.round(Math.random()*155+50),
b:Math.round(Math.random()*155+50),
g:Math.round(Math.random()*155+50)},*/
_bulb,_glas,_glow);
bulb.flick();
bulbs.push(bulb);
}
var _bulbs = document.getElementsByClassName('bulb');
for(var j=0; j < _bulbs.length; j++)
{
_bulbs[j].addEventListener('mouseover',function()
{
this.classList.add('swing');
setTimeout(function(){this.classList.remove('swing');}.bind(this),2000);
});
_bulbs[j].addEventListener('touchstart',function()
{
this.classList.add('swing');
setTimeout(function(){this.classList.remove('swing');}.bind(this),2000);
});
}
window.addEventListener('resize',function()
{
for(var l=0; l < _bulbs.length; l++)
{
_bulbs[l].style.top = Math.floor(line.clientHeight/7 * Math.sin(l*(180/23)*Math.PI/180))+"px";
}
});
var counter = 0;
setInterval(function()
{
if(counter > bulbs.length-1)counter=0;
bulbs[counter].flick();
setTimeout(function(_counter){bulbs[_counter].flick();}.bind(this,counter),1200);
counter++;
},150);
setInterval(function()
{
const even = bulbs.filter((b,i) => i%2 === 0);
},3000);
</script>
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