17 lines
511 B
JavaScript
17 lines
511 B
JavaScript
(function() {
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const className = 'cover';
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const covers = Array.from(document.querySelectorAll(`.${className}`));
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const toggleVisibleData = (entries, observer) => {
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entries.forEach(entry => {
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entry.target.setAttribute('data-visible', entry.isIntersecting);
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});
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};
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if ('IntersectionObserver' in window) {
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covers.forEach(t => t.setAttribute('data-observe', ''));
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const observer = new IntersectionObserver(toggleVisibleData);
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covers.forEach(t => observer.observe(t));
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}
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})();
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