91 lines
2.3 KiB
JavaScript
91 lines
2.3 KiB
JavaScript
(function() {
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'use strict';
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if (typeof scrollToTopSettings === 'undefined') {
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return;
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}
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const settings = scrollToTopSettings;
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let button = null;
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let scrollTimeout = null;
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function createButton() {
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button = document.createElement('div');
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button.className = 'scroll-to-top-button';
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button.setAttribute('aria-label', 'Scroll to top');
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button.classList.add('stt-style-' + settings.style);
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button.classList.add('stt-size-' + settings.size);
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button.classList.add('stt-position-' + settings.position);
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if (!settings.showMobile) {
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button.classList.add('stt-hide-mobile');
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}
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const content = document.createElement('span');
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content.className = 'stt-button-content';
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button.appendChild(content);
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document.body.appendChild(button);
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applyStyles();
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addEventListeners();
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}
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function applyStyles() {
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if (!button) return;
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button.style.backgroundColor = settings.bgColor;
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button.style.color = settings.textColor;
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if (settings.position === 'bottom-right') {
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button.style.right = '20px';
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button.style.left = 'auto';
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} else {
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button.style.left = '20px';
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button.style.right = 'auto';
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}
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}
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function handleScroll() {
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if (!button) return;
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clearTimeout(scrollTimeout);
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scrollTimeout = setTimeout(function() {
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if (window.scrollY > 200) {
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button.classList.add('visible');
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} else {
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button.classList.remove('visible');
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}
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}, 10);
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}
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function scrollToTop(e) {
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e.preventDefault();
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window.scrollTo({
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top: 0,
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behavior: 'smooth'
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});
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}
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function addEventListeners() {
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if (!button) return;
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window.addEventListener('scroll', handleScroll, { passive: true });
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button.addEventListener('click', scrollToTop);
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}
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function init() {
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', createButton);
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} else {
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createButton();
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}
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}
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init();
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})();
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