Kirchik
50 lines
2.3 KiB
HTML
50 lines
2.3 KiB
HTML
<div id="global-back-to-top" class="back-to-top-btn" onclick="scrollToTop()"
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style="position: fixed; bottom: 30px; right: 30px; background: rgba(255, 255, 255, 0.15); color: #ffffff; border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 50%; width: 56px; height: 56px; cursor: pointer; font-size: 1.2rem; opacity: 0; visibility: hidden; z-index: 1000; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2); backdrop-filter: blur(10px); text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8); transition: all 0.3s ease;">
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↑
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</div>
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<script>
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function scrollToTop() {
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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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window.addEventListener('scroll', function() {
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const backToTopBtn = document.getElementById('global-back-to-top');
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// Вычисляем высоту страницы и положение скролла
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const documentHeight = document.documentElement.scrollHeight;
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const windowHeight = window.innerHeight;
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const scrollTop = window.pageYOffset || document.documentElement.scrollTop;
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// Показываем кнопку только в последней трети страницы
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const scrollPercent = (scrollTop + windowHeight) / documentHeight;
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if (scrollPercent > 0.66) { // Показываем когда прокрутили 66% страницы
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backToTopBtn.style.opacity = '1';
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backToTopBtn.style.visibility = 'visible';
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} else {
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backToTopBtn.style.opacity = '0';
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backToTopBtn.style.visibility = 'hidden';
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}
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});
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// Добавляем hover эффекты
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document.addEventListener('DOMContentLoaded', function() {
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const backToTopBtn = document.getElementById('global-back-to-top');
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backToTopBtn.addEventListener('mouseenter', function() {
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this.style.background = 'rgba(255, 255, 255, 0.3)';
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this.style.transform = 'translateY(-2px) scale(1.05)';
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this.style.boxShadow = '0 6px 20px rgba(0, 0, 0, 0.4)';
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});
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backToTopBtn.addEventListener('mouseleave', function() {
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this.style.background = 'rgba(255, 255, 255, 0.15)';
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this.style.transform = 'translateY(0) scale(1)';
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this.style.boxShadow = '0 4px 15px rgba(0, 0, 0, 0.2)';
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});
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});
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</script> |