ユーザーのモーションの好みを考慮したインタラクティブな文字効果を作成します。
記事全文 · YouTube の動画 · GitHub にソースを表示
HTML
<h1 split-by="letter" letter-animation="hover">
hover-me letters
</h1>
CSS
@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)
}
}
JS
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)
})
}