Add autoplay to a css/html slideshow, is it possible? - css

Question

Hi I have the following css- html slideshow with controls but I would like to add the autoplay function too. Is it possible? I tried with javascript but I didn t have luck. I would like to leave the arrows and get rid of the bullets underneath.
<div class="slideshow-container">
<div class="mySlides fade">
<img src="lara_zizektours.jpg" name="slide" alt="" style="width:100%">
</div>
<div class="mySlides fade">
<img src="tremor_zizektours.jpg" name="slide" alt="" style="width:100%">
</div>
<div class="mySlides fade">
<img src="femina_zizektours.jpg" name="slide" alt="" style="width:100%">
</div>
<div class="mySlides fade">
<img src="kingcoya_zizektours.jpg" name="slide" alt="" style="width:100%">
</div>
<div class="mySlides fade">
<img src="sofia_zizektours.jpg" name="slide" alt="" style="width:100%">
</div>
<div class="mySlides fade">
<img src="1_zizektours.jpg" alt="" name="slide" style="width:100%">
</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>
<span class="dot" onclick="currentSlide(6)"></span>
</div>
/* SLIDESHOW CONTAINER */
.slideshow-container {
max-width: 2000px;
position: relative;
margin: 0px;
}
.mySlides {
display: none;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -22px;
padding: 16px;
color: yellow;
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;
}
/* 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: yellow;
}
/* 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}
}

Answer 1

Assuming your slideshow works now (you didn't post the javascript) you can set a simple setInterval and trigger click() on one of your arrow keys.
I added an ID to each of the arrows so it's easier to target in javascript. And I added a plusSlides() function here just to console.log the event triggering - you don't need that since you should already have it in your code.
var next = document.getElementById('next'),
seconds = 3;
var interval = setInterval(function() {
next.click();
}, (seconds * 1000))
/* you don't need this function - just for the demo */
function plusSlides(val) {
console.log(val);
}
<a class="prev" id="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" id="next" onclick="plusSlides(1)">❯</a>

Answer 2

https://www.w3schools.com/w3css/w3css_slideshow.asp provides an answer under the heading Automatic slideshow. You can compare with and reuse their codes and scripts.