HTML Javascript幻灯片不起作用
[英]HTML Javascript Slideshow Not Working
问题描述
我正在编写一个非常简单的HTML和Javascript幻灯片。 但是，在初始页面加载时，页面确实将每张幻灯片都彼此加载。 但是，当您单击箭头时，幻灯片会消失，并且当前幻灯片会出现并正常运行。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script language="javascript">
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>
</head>
<body>
<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 5</div>
<img src="img/hispanic1.png" alt="dancers performing" style="width:100%" >
<div class="text">Hispanic dancers performing at the Hispanic Heritage Festival</div>
</div>
<div class="mySlides fade">
<div class="numbertext">2 / 5</div>
<img src="img/pinkribbon2.png" alt="pink ribbon" style="width:100%">
<div class="text">Come support Breast Cancer Awareness Month at Santa Fe</div>
</div>
<div class="mySlides fade">
<div class="numbertext">3 / 5</div>
<img src="img/bloodbus1.png" alt="Blood Drive Bus" style="width:100%">
<div class="text">Come donate blood for our Halloween Event!</div>
</div>
<div class="mySlides fade">
<div class="numbertext">4 / 5</div>
<img src="img/volunteer1.png" alt="Volunteers Pointing" style="width:100%">
<div class="text">Volunteer with a wonderful organization at our Volunteer Fair!</div>
</div>
<div class="mySlides fade">
<div class="numbertext">5 / 5</div>
<img src="img/clubrush1.png" alt="Girls rugby table" style="width:100%">
<div class="text">Come out and join a club at Club Rush!</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>
<span class="dot" onclick="currentSlide(3)"></span>
<span class="dot" onclick="currentSlide(4)"></span>
<span class="dot" onclick="currentSlide(5)"></span>
</div>
</body>
</html>
/* Slideshow container */
.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -22px;
padding: 16px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
}
/* 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: #f2f2f2;
font-size: 15px;
padding: 8px 12px;
position: absolute;
bottom: 8px;
width: 100%;
text-align: center;
}
/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
/* The dots/bullets/indicators */
.dot {
cursor:pointer;
height: 13px;
width: 13px;
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}
}
希望我能够正确格式化所有内容。 感谢您提供的所有帮助！
1 个解决方案
解决方案1
1 2016-10-17 18:25:02
我已经在一个可运行的代码段中重新创建了您的代码。 滑槽滑梯似乎在那里工作。
您可以检查代码段，看看是否有些代码不同吗？
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"; }
img{ width:100px; }
<div class="slideshow-container"> <div class="mySlides fade"> <div class="numbertext">1 / 5</div> <img src="http://www.acuteaday.com/blog/wp-content/uploads/2013/03/panda-bear-cub-playing-on-rocking-horse.jpg" alt="dancers performing" > <div class="text">Hispanic dancers performing at the Hispanic Heritage Festival</div> </div> <div class="mySlides fade"> <div class="numbertext">2 / 5</div> <img src="http://s.hswstatic.com/gif/giant-panda-bear-pictures0.jpg" alt="pink ribbon"> <div class="text">Come support Breast Cancer Awareness Month at Santa Fe</div> </div> <div class="mySlides fade"> <div class="numbertext">3 / 5</div> <img src="http://www.acuteaday.com/blog/wp-content/uploads/2013/03/panda-bear-cub-playing-on-rocking-horse.jpg" alt="Blood Drive Bus"> <div class="text">Come donate blood for our Halloween Event!</div> </div> <div class="mySlides fade"> <div class="numbertext">4 / 5</div> <img src="http://s.hswstatic.com/gif/giant-panda-bear-pictures0.jpg" alt="Volunteers Pointing"> <div class="text">Volunteer with a wonderful organization at our Volunteer Fair!</div> </div> <div class="mySlides fade"> <div class="numbertext">5 / 5</div> <img src="http://www.acuteaday.com/blog/wp-content/uploads/2013/03/panda-bear-cub-playing-on-rocking-horse.jpg" alt="Girls rugby table"> <div class="text">Come out and join a club at Club Rush!</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> <span class="dot" onclick="currentSlide(3)"></span> <span class="dot" onclick="currentSlide(4)"></span> <span class="dot" onclick="currentSlide(5)"></span> </div> </body> </html>
html＆javascript幻灯片不起作用（按钮）
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