Keith Solomon
34 lines
1.0 KiB
JavaScript
34 lines
1.0 KiB
JavaScript
// Back to Top Button Component
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class BackToTopButton extends HTMLElement {
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connectedCallback() {
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this.innerHTML = `
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<button id="backToTopBtn" aria-label="Back to top" class="back-to-top" style="">
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↑ Top
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</button>
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`;
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const btn = this.querySelector('#backToTopBtn');
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let previousScrollY = window.scrollY;
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window.addEventListener('scroll', () => {
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const currentScrollY = window.scrollY;
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const isScrollingUp = currentScrollY < previousScrollY;
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const shouldShowButton = currentScrollY > 300 && isScrollingUp;
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btn.style.display = shouldShowButton ? 'block' : 'none';
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previousScrollY = currentScrollY;
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});
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btn.addEventListener('click', () => {
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window.scrollTo({ top: 0, behavior: 'smooth' });
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});
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}
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}
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export function registerBackToTopButton() {
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if (!customElements.get('back-to-top')) {
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customElements.define('back-to-top', BackToTopButton);
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}
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}
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