Result CSS変数を更新するJSスニペットです。べんり。 ※本コードは非依存のバニラJSです let root = document.documentElement; root.addEventListener("mousemove", e => { root.style.setProperty('--mouse-x', e.clientX + "px"); root.style.setProperty('--mouse-y', e.clientY + "px"); });css.mover { width: 50px; height: 50px; background: red; position: absolute; left: var(--mouse-x); top: var(--mouse-y); }html<div class="mover"></div>viaUpdati
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