如何使上一个和下一个按钮具有粘性？
[英]How can I make the prev and next buttons sticky?
问题描述
我在w3school 幻灯片中找到了幻灯片教程，但是如果我用大量文本内容替换图像，则只有向下滚动到页面底部才能看到上一个和下一个箭头。 所以我在想是否可以让按钮变得粘稠。 所以我找到了粘性功能。 下面部分是我的测试代码，它结合了幻灯片和粘性。 请帮我找到如何解决这个问题。 谢谢！
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> * {box-sizing: border-box} body {font-family: Verdana, sans-serif; margin:0} .mySlides {display: none} img {vertical-align: middle;} /* Slideshow container */ .slideshow-container { max-width: 400px; position: relative; margin: auto; } /* Next & previous buttons */ .prev, .next { cursor: pointer; position: -webkit-sticky; position: sticky; top: 0; width: auto; padding: 5px; color: green; font-weight: bold; font-size: 58px;/* size buttons */ transition: 0.6s ease; border-radius: 0 3px 3px 0; user-select: none; } /* Position the "next button" to the right */ .next { right: 0; border-radius: 3px 0 0 3px; } /* On hover, add a black background color with a little bit see-through */ .prev:hover, .next:hover { background-color: rgba(0,0,0,0.8); } /* Caption text */ .text { color: black; font-size: 15px; padding: 8px 12px; position: absolute; bottom: 8px; width: 100%; text-align: center; } /* Number text (1/3 etc) */ .numbertext { color: black; font-size: 12px; padding: 8px 12px; position: absolute; top: 0; } /* The dots/bullets/indicators */ .dot { cursor: pointer; height: 15px; width: 15px; margin: 0 2px; background-color: #bbb; border-radius: 50%; display: inline-block; transition: background-color 0.6s ease; } .active, .dot:hover { background-color: #717171; } /* Fading animation */ .fade { -webkit-animation-name: fade; -webkit-animation-duration: 1.5s; animation-name: fade; animation-duration: 1.5s; } @-webkit-keyframes fade { from {opacity: .4} to {opacity: 1} } @keyframes fade { from {opacity: .4} to {opacity: 1} } /* On smaller screens, decrease text size */ @media only screen and (max-width: 400px) { .prev, .next,.text {font-size: 11px} } </style> </head> <body> <div class="slideshow-container"> <div class="mySlides fade"> <div class="numbertext">1 / 2</div> <br> <br> <div style="padding-bottom:2000px"> <p>In this example, the sticky element sticks to the top of the page (top: 0), when you reach its scroll position.</p> <p>Scroll back up to remove the stickyness.</p> <p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p> <p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p> </div> <div class="text">L1 News</div> </div> <div class="mySlides fade"> <div class="numbertext">2 / 2</div> <table> <br> <td> 2 </td> </br> </table> <div class="text">L2 news</div> </div> <a class="prev" onclick="plusSlides(-1)">❮</a> <a class="next" onclick="plusSlides(1)">❯</a> </div> <br> <div style="text-align:center"> <span class="dot" onclick="currentSlide(1)"></span> <span class="dot" onclick="currentSlide(2)"></span> </div> <script> var slideIndex = 1; showSlides(slideIndex); function plusSlides(n) { showSlides(slideIndex += n); } function currentSlide(n) { showSlides(slideIndex = n); } function showSlides(n) { var i; var slides = document.getElementsByClassName("mySlides"); var dots = document.getElementsByClassName("dot"); if (n > slides.length) {slideIndex = 1} if (n < 1) {slideIndex = slides.length} for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; } for (i = 0; i < dots.length; i++) { dots[i].className = dots[i].className.replace(" active", ""); } slides[slideIndex-1].style.display = "block"; dots[slideIndex-1].className += " active"; } </script> </body> </html>
2 个解决方案
解决方案1
1 已采纳 2019-02-25 05:45:50
我想你可能误解了position: sticky和position:fixed 。
这是一篇解释差异的好帖子。
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> * {box-sizing: border-box} body {font-family: Verdana, sans-serif; margin:0} .mySlides {display: none} img {vertical-align: middle;} /* Slideshow container */ .slideshow-container { max-width: 400px; position: relative; margin: auto; } /* Next & previous buttons */ .prev, .next { cursor: pointer; position: -webkit-sticky; position: fixed; bottom: 0; width: auto; padding: 5px; color: green; font-weight: bold; font-size: 58px;/* size buttons */ transition: 0.6s ease; border-radius: 0 3px 3px 0; user-select: none; } /* Position the "next button" to the right */ .next { right: 0; border-radius: 3px 0 0 3px; } /* On hover, add a black background color with a little bit see-through */ .prev:hover, .next:hover { background-color: rgba(0,0,0,0.8); } /* Caption text */ .text { color: black; font-size: 15px; padding: 8px 12px; position: absolute; bottom: 8px; width: 100%; text-align: center; } /* Number text (1/3 etc) */ .numbertext { color: black; font-size: 12px; padding: 8px 12px; position: absolute; top: 0; } /* The dots/bullets/indicators */ .dot { cursor: pointer; height: 15px; width: 15px; margin: 0 2px; background-color: #bbb; border-radius: 50%; display: inline-block; transition: background-color 0.6s ease; } .active, .dot:hover { background-color: #717171; } /* Fading animation */ .fade { -webkit-animation-name: fade; -webkit-animation-duration: 1.5s; animation-name: fade; animation-duration: 1.5s; } @-webkit-keyframes fade { from {opacity: .4} to {opacity: 1} } @keyframes fade { from {opacity: .4} to {opacity: 1} } /* On smaller screens, decrease text size */ @media only screen and (max-width: 400px) { .prev, .next,.text {font-size: 11px} } </style> </head> <body> <div class="slideshow-container"> <div class="mySlides fade"> <div class="numbertext">1 / 2</div> <br> <br> <div style="padding-bottom:2000px"> <p>In this example, the sticky element sticks to the top of the page (top: 0), when you reach its scroll position.</p> <p>Scroll back up to remove the stickyness.</p> <p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p> <p>Some text to enable scrolling.. Lorem ipsum dolor sit amet, illum definitiones no quo, maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae voluptatibus.</p> </div> <div class="text">L1 News</div> </div> <div class="mySlides fade"> <div class="numbertext">2 / 2</div> <table> <br> <td> 2 </td> </br> </table> <div class="text">L2 news</div> </div> <a class="prev" onclick="plusSlides(-1)">❮</a> <a class="next" onclick="plusSlides(1)">❯</a> </div> <br> <div style="text-align:center"> <span class="dot" onclick="currentSlide(1)"></span> <span class="dot" onclick="currentSlide(2)"></span> </div> <script> var slideIndex = 1; showSlides(slideIndex); function plusSlides(n) { showSlides(slideIndex += n); } function currentSlide(n) { showSlides(slideIndex = n); } function showSlides(n) { var i; var slides = document.getElementsByClassName("mySlides"); var dots = document.getElementsByClassName("dot"); if (n > slides.length) {slideIndex = 1} if (n < 1) {slideIndex = slides.length} for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; } for (i = 0; i < dots.length; i++) { dots[i].className = dots[i].className.replace(" active", ""); } slides[slideIndex-1].style.display = "block"; dots[slideIndex-1].className += " active"; } </script> </body> </html>
解决方案2
0 2019-02-25 05:43:03
如何使下一个和上一个按钮在列表中导航并触发其功能？
[英]How to make next and prev buttons to navigate through a list and trigger their functions?
如何在弹出窗口上制作带有下一个和上一个按钮导航的模态滑块
[英]How to make a modal slider with next and prev buttons navigation on popup
如何使用JQuery为Next和Prev按钮显示/隐藏单个HTML页面的部分创建有效的方法？
[英]How can I use JQuery to create an efficient method for Next and Prev buttons to show/hide Sections of a single HTML Page?
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