README

A simple slider script with css transitions for effects. It works by applying an active class on the the active slide so you can customize all transitions with css.

Usage

Add some slider elements to your html for example

<section class="slider" aria-label="Slider" id="slider">
    <div class="slide"role="tabpanel" aria-roledescription="slide"  id="slide-1" aria-label="Slide 1">
        <img src="image1.jpg" alt="First image">
        <h2>An image!</h2>
    </div>
    <div class="slide" role="tabpanel" aria-roledescription="slide" id="slide-2" aria-label="Slide 2">
        <img src="image2.jpg" alt="Second image">
        <h2>Another image</h2>
    </div>
    <div class="slide" role="tabpanel" aria-roledescription="slide" id="slide-3" aria-label="Slide 3">
        <img src="image3.jpg" alt="Third image">
    </div>
    <span class="slider-prev" aria-label="Previous slide">></span>
    <span class="slider-next" aria-label="Next slide">></span>
    <span class="slider-dots" role="tablist" aria-label="Slides"></span>
</section>

Include the main script

<script src="/vanilla-slider/slider.js"></script>

Add the following javascript to your project and change where needed

var slider = new Slider({
    selector: '.slider',
    slideSelector: '.slide',
    interval: 5000,
});

And finaly apply some css, for example

.slider {height:33.333333vw;position:relative}
.slider .slide {position:absolute;top:0;right:0;bottom:0;left:0}
.slider .slide IMG {display:block;width:100%;height:100%;object-fit:cover}
.slider .slide H2 {position:absolute;z-index:1;color:$white;bottom:0;font-size:3vw;padding:1vw}
.slider .slide {opacity:0;transition:opacity 0s, transform 0s;transition-delay:1s;z-index:1}
.slider .slide.active {opacity:1;z-index:2;transition-delay:0s;transition:opacity 1s, transform 1s}
.slider:hover .slider-prev,
.slider:hover .slider-next {position:absolute;top:50%;display:block;transform:translateY(-50%);z-index:10;width:40px;height:40px;border-radius:100%;background-color:rgba(0,0,0,0.2);cursor:pointer}
.slider:hover .slider-prev:hover,
.slider:hover .slider-next:hover {background-color:rgba(0,0,0,0.4)}
.slider .slider-prev::before,
.slider .slider-next::before {content:'';width:14px;height:14px;display:block;position:absolute;border-top:3px solid #fff;border-right:3px solid #fff;top:50%;left:50%}
.slider .slider-prev {left:10px}
.slider .slider-next {right:10px}
.slider .slider-prev::before {transform:translate(-6px,-50%) rotate(-135deg)}
.slider .slider-next::before {transform:translate(-12px,-50%) rotate(45deg)}
.slider .slider-dots {position:absolute;bottom:0;right:0;z-index:10;line-height:1}
.slider .slider-dot {display:inline-block;width:11px;height:11px;margin:0 5px;border:1px solid #ccc;border-radius:100%;background-color:#ccc;cursor:pointer;color:transparent}
.slider .slider-dot.active {background-color:#fff}