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javascript - 如何制作一个自动滑动的javascript slider

转载 作者:行者123 更新时间:2023-11-28 18:19:24 25 4
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我正在尝试为我的 html 页面创建一个 slider ,

我在css/javascript中找到了这个 slider ,一切正常,但是如何才能使幻灯片也自动滑动,而不是仅在用户按下箭头时才滑动?

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-white", "");
}
x[slideIndex - 1].style.display = "block";
dots[slideIndex - 1].className += " w3-white";
setTimeout(2000); // Change image every 2 seconds

}
<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://www.w3schools.com/lib/w3.css">
<style>
.mySlides {
display: none
}
.w3-left,
.w3-right,
.w3-badge {
cursor: pointer
}
.w3-badge {
height: 13px;
width: 13px;
padding: 0
}
</style>

<body>

<div class="w3-container">
<h2>Slideshow Indicators</h2>
<p>An example of using buttons to indicate how many slides there are in the slideshow, and which slide the user is currently viewing.</p>
</div>

<div class="w3-content w3-display-container" style="max-width:800px">
<img class="mySlides" src="img_nature_wide.jpg" style="width:100%">
<img class="mySlides" src="img_fjords_wide.jpg" style="width:100%">
<img class="mySlides" src="img_mountains_wide.jpg" style="width:100%">
<div class="w3-center w3-section w3-large w3-text-white w3-display-bottomleft" style="width:100%">
<div class="w3-left w3-padding-left w3-hover-text-khaki" onclick="plusDivs(-1)">&#10094;</div>
<div class="w3-right w3-padding-right w3-hover-text-khaki" onclick="plusDivs(1)">&#10095;</div>
<span class="w3-badge demo w3-border w3-transparent w3-hover-white" onclick="currentDiv(1)"></span>
<span class="w3-badge demo w3-border w3-transparent w3-hover-white" onclick="currentDiv(2)"></span>
<span class="w3-badge demo w3-border w3-transparent w3-hover-white" onclick="currentDiv(3)"></span>
</div>
</div>

<script>
</script>

</body>

</html>

最佳答案

嗨,我刚刚实现了频繁滑动图像的逻辑..

试试这个

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://www.w3schools.com/lib/w3.css">
<style>
.mySlides {display:none}
.w3-left, .w3-right, .w3-badge {cursor:pointer}
.w3-badge {height:13px;width:13px;padding:0}
</style>
<body>

<div class="w3-container">
<h2>Slideshow Indicators</h2>
<p>An example of using buttons to indicate how many slides there are in the slideshow, and which slide the user is currently viewing.</p>
</div>

<div class="w3-content w3-display-container" style="max-width:800px">
<img class="mySlides" alt="sample test1" src="mfdg2.jpg" style="width:100%">
<img class="mySlides" alt="sample test2" src="img2.jpg" style="width:100%">
<img class="mySlides" alt="sample test3" src="img1.jpg" style="width:100%">
</div>

<script>
showDivs(1);

function plusDivs(n) {
n=n+1;
showDivs(n);
}

function showDivs(n) {
var i;
var x = document.getElementsByClassName("mySlides");
if (n > x.length) {n = 1}

for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}

x[n-1].style.display = "block";
setTimeout(function() { //calls click event after a certain time
plusDivs(n);
}, 2000);

}

</script>

</body>
</html>

它对我有用..

关于javascript - 如何制作一个自动滑动的javascript slider ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40155136/

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