通过 w3 schools,我能够制作这个幻灯片并将其添加到我的网页上。除了按钮的位置外,一切都运行顺利。目前它们在自己的 div 中,但我希望它们位于底部中心的图像之上。
到目前为止,我已经尝试删除 div 并调整位置,但这对我不起作用。
下面是代码,这里是一个Codepen .实际的幻灯片在示例中可能不起作用(只是在输入代码片段时发现这一点),但我只是在研究如何定位 <span class="dot"
的 3 个点。在图像之上
提前致谢!
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";
}
/* SLIDESHOW */
#slideshow {
height: 400px;
width: 100%;
position: relative;
margin: auto;
overflow: hidden;
}
#slideshow img {
height: 400px;
width: 100%;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
padding: 16px;
margin-top: -22px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.4s 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);
}
/* 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;
}
.fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 1.5s;
animation-name: fade;
animation-duration: 1.5s;
}
<div id="slideshow">
<div class="mySlides fade">
<img src="https://picsum.photos/1600/400">
</div>
<div class="mySlides fade">
<img src="https://picsum.photos/1600/400">
</div>
<div class="mySlides fade">
<img src="https://picsum.photos/1600/400">
</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>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
最佳答案
将点放在 #slideshow div 的底部,父 div 的类名为“dots”。然后将此 css 添加到“点”div。
.dots {
width: 100px;
position: absolute;
bottom: 0;
left: 50%;
margin-left: -50px;
}
关于javascript - 如何将幻灯片选择器点放在图像顶部?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58648382/