This content originally appeared on web.dev and was authored by Jhey Tompkins
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Create the markup for our loader. Note the use of inline custom properties:
<div class="loader" style="--count: 10">
<span style="--index: 0"></span>
<span style="--index: 1"></span>
<span style="--index: 2"></span>
<span style="--index: 3"></span>
<span style="--index: 4"></span>
<span style="--index: 5"></span>
<span style="--index: 6"></span>
<span style="--index: 7"></span>
<span style="--index: 8"></span>
<span style="--index: 9"></span>
</div>
You can also use a generator (Pug) to configure the number of lines:
- const COUNT = 10
.loader(style=`--count: ${COUNT}`)
- let i = 0
while i < COUNT
span(style=`--index: ${i}`)
- i++Give our loader some styles:
loader {
--size: 10vmin;
height: var(--size);
position: relative;
width: var(--size);
}Position our lines using absolute positioning and a combination of calc with transform:
.loader span {
background: grey;
height: 25%;
left: 50%;
position: absolute;
top: 50%;
transform: translate(-50%, -50%)
rotate(calc(((360 / var(--count)) * var(--index)) * 1deg))
translate(0, -125%);
width: 10%;
}Apply an opacity based on the --index:
.loader span {
opacity: calc(var(--index) / var(--count));
} Get things spinning!
.loader {
animation: spin 0.75s infinite steps(var(--count));
}
@keyframes spin {
to {
transform: rotate(360deg);
}
}Note the use of steps(var(--count)) to get the right effect ✨
Done! 🎉
Prefer this in tweet form? 🐦
Stay Awesome! ʕ •ᴥ•ʔ
This content originally appeared on web.dev and was authored by Jhey Tompkins
Jhey Tompkins | Sciencx (2022-09-22T00:00:00+00:00) Speedy CSS Tip! Animated Loader. Retrieved from https://www.scien.cx/2022/09/22/speedy-css-tip-animated-loader/
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