17 lines
544 B
JavaScript
17 lines
544 B
JavaScript
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window.onscroll = function () {
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scrollFunction();
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};
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function scrollFunction() {
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if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
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document.getElementById("scrollToTopBtn").style.display = "block";
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} else {
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document.getElementById("scrollToTopBtn").style.display = "none";
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}
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}
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// Posunout nahoru, když uživatel klikne na tlačítko
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function scrollToTop() {
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document.body.scrollTop = 0; // Pro Safari
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document.documentElement.scrollTop = 0; // Pro ostatní prohlížeče
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}
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