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fix: skip scroll event if no backToTop element (#138)

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Xin 2023-10-12 23:25:34 +01:00 committed by GitHub
parent 96c6ff073f
commit cb09b7ce1e
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1 changed files with 14 additions and 10 deletions
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12
assets/js/back-to-top.js
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@ -1,18 +1,22 @@
const backToTop = document.querySelector("#backToTop");
// Back to top button
document.addEventListener("scroll", (event) => {
document.addEventListener("DOMContentLoaded", function () {
const backToTop = document.querySelector("#backToTop");
if (backToTop) {
document.addEventListener("scroll", (e) => {
if (window.scrollY > 300) {
backToTop.classList.remove("opacity-0");
} else {
backToTop.classList.add("opacity-0");
}
});
}
});
function scrollUp() {
window.scroll({
top: 0,
left: 0,
behavior: 'smooth'
behavior: "smooth",
});
}