我遵循了 w3school 的教程
现在我想用 prev/next 来改进它，而不是 slider
这就是我想要的
这也是我的代码
或
var slideIndex = 1;
showDivs(slideIndex);
function plusDivs(n) {
showDivs(slideIndex += n);
}
function currentDiv(n) {
showDivs(slideIndex = n);
}
function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("demo");
if (n > x.length) {slideIndex = 1}
if (n < 1) {slideIndex = x.length}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" w3-opacity-off", "");
}
x[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " w3-opacity-off";
}#indi {
width: 200px;
float:left;
}<body>
<div class="w3-content" style="max-width:1200px">
<img class="mySlides" src="https://www.w3schools.com/w3css/img_mountains.jpg" style="width:100%">
<img class="mySlides" src="https://www.w3schools.com/w3css/img_fjords_wide.jpg" style="width:100%">
<img class="mySlides" src="https://www.w3schools.com/w3css/img_mountains_wide.jpg" style="width:100%">
<div class="w3-row-padding w3-section">
<div id="indi" class="w3-col s4">
<img class="demo w3-opacity w3-hover-opacity-off" src="https://www.w3schools.com/w3css/img_nature_wide.jpg" style="width:100%" onclick="currentDiv(1)">
</div>
<div id="indi" class="w3-col s4">
<img class="demo w3-opacity w3-hover-opacity-off" src="https://www.w3schools.com/w3css/img_fjords_wide.jpg" style="width:100%" onclick="currentDiv(2)">
</div>
<div id="indi" class="w3-col s4">
<img class="demo w3-opacity w3-hover-opacity-off" src="https://www.w3schools.com/w3css/img_mountains_wide.jpg" style="width:100%" onclick="currentDiv(3)">
</div>
</div>
</div>
</body>谢谢，感谢任何帮助
最佳答案
下一步:
$("#next").click(function () {
$("#container div:eq(" + num + ")").slideUp(450);
num = (num + 1) % 4;
$("#container div:eq(" + num + ")").fadeIn(450);
});
最后:
$("#last").click(function () {
$("#container div:eq(" + num + ")").slideUp(450);
num = 4;
$("#container div:eq(" + num + ")").fadeIn(450);
});
这已经被询问和回答 - How do I add buttons to my Javascript/Jquery Slider?
如果您需要任何更具体的帮助，请随时提出。
关于javascript - 带上一个/下一个按钮的图像轮播/幻灯片，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43276148/