📅  最后修改于: 2022-03-11 14:58:18.035000             🧑  作者: Mango
var el = document.getElementById('element');
// Set will-change when the element is hovered
el.addEventListener('mouseenter', hintBrowser);
el.addEventListener('animationEnd', removeHint);
function hintBrowser() {
// The optimizable properties that are going to change
// in the animation's keyframes block
this.style.willChange = 'transform, opacity';
}
function removeHint() {
this.style.willChange = 'auto';
}