建立尊重使用者動作偏好設定的互動式字母效果。
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<h1 split-by="letter" letter-animation="hover">
hover-me letters
</h1>
@media (prefers-reduced-motion:no-preference) {
[letter-animation=hover]:hover>span {
transform: scale(.75) perspective(1px)
}
[letter-animation=hover]>span {
transition: transform .3s ease;
cursor: pointer;
will-change: transform
}
[letter-animation=hover]>span:hover {
transform: scale(1.25) perspective(1px)
}
}
const span = (text, index) => {
const node = document.createElement('span')
node.textContent = text
node.style.setProperty('--index', index)
return node
}
const byLetter = text =>
[...text].map(span)
const {matches:motionOK} = window.matchMedia(
'(prefers-reduced-motion: no-preference)'
)
if (motionOK) {
const splitTargets = document.querySelectorAll('[split-by]')
splitTargets.forEach(node => {
let nodes = byLetter(node.innerText)
if (nodes)
node.firstChild.replaceWith(...nodes)
})
}