mformarlon.github.io/carousel.html at master · MForMarlon/mformarlon.github.io · GitHub

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<!DOCTYPE HTML>
<html>
<head>
<title>Carousel</title>
<style>
html, body {
    height: 100%;
}
body {
    margin: 0;
    background: #656476;
    background: -webkit-linear-gradient(top, #000, #656476);
    background: -moz-linear-gradient(top, #000, #656476);
    background: -ms-linear-gradient(top, #000, #656476);
}
#carousel{
    width: 100%;
    height: 100%;
    position: relative;
}
#panels {
    padding: 0;
    margin: 0;
    list-style-type:none;
    width: 100%;
    height: 310px;
    position: absolute;
    top: 50%;
    margin-top: -150px;
    overflow: hidden;
}
.panel {
    border-radius: 10px;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    background: #0065c0;
    background: -webkit-linear-gradient(top, #0065c0, #0a4593);
    background: -moz-linear-gradient(top, #0065c0, #0a4593);
    background: -ms-linear-gradient(top, #0065c0, #0a4593);

    box-shadow: 0 0 10px #000;
    -webkit-box-shadow: 0 0 10px #000;
    -moz-box-shadow: 0 0 10px #000;

    width: 200px;
    height: 200px;
    cursor: pointer;
    text-align: center;
    color: #fff;
    display: block;
}
.current {
    width: 300px;
    height: 300px;
    position: absolute;
    left: 50%;
    margin-left: -150px;
}
.prev{
    position: absolute;
    left: -100px;
}
.next{
    position: absolute;
    right: -100px;
}
.prev, .next {
    margin-top: 40px;
}
.hidden {
    display: none;
}
</style>
</head>

<body onload="carousel.init()">
<div id="carousel">
    <ul id="panels">
        <li class="panel">0</li>
        <li class="panel">1</li>
        <li class="panel">2</li>
        <li class="panel">3</li>
        <li class="panel">4</li>
        <li class="panel">5</li>
        <li class="panel">6</li>
        <li class="panel">7</li>
        <li class="panel">8</li>
        <li class="panel">9</li>
    </ul>
</div>
<script type="text/javascript">
var carousel = {
    // Array to keep track of the panels
    panels: document.getElementsByClassName('panel'),
    // Current index
    current: 0,
    init: function(){
        document.addEventListener('keyup', carousel.keyControl);
        carousel.resetPanels();
    },
    resetPanels: function(){
        // Hide all the panels.
        var panels = carousel.panels;
        for(var i = 0; i < panels.length; i++){
            panels[i].classList.add('hidden');
            panels[i].classList.remove('current');
            panels[i].classList.remove('next');
            panels[i].classList.remove('prev');

            panels[i].removeEventListener('click', carousel.goToNextSlide);
            panels[i].removeEventListener('click', carousel.goToPreviousSlide);
        }

        // Fix current index if it is out of bounds.
        if(carousel.current < 0){
            carousel.current = panels.length - 1;
        }
        else if(carousel.current > panels.length - 1){
            carousel.current = 0
        }
        // Expose current panel.
        panels[carousel.current].classList.add('current');
        panels[carousel.current].classList.remove('hidden');

        // Fix/expose next panel.
        var nextIndex = carousel.current + 1;
        if(nextIndex > panels.length - 1){
            nextIndex = 0;
        }
        panels[nextIndex].classList.add('next');
        panels[nextIndex].classList.remove('hidden');

        // Fix/expose previous panel.
        var prevIndex = carousel.current - 1;
        if(prevIndex < 0){
            prevIndex = panels.length - 1;
        }
        panels[prevIndex].classList.add('prev');
        panels[prevIndex].classList.remove('hidden');

        // Add new event listeners.
        document.getElementsByClassName('next')[0].addEventListener('click', carousel.goToNextSlide);
        document.getElementsByClassName('prev')[0].addEventListener('click', carousel.goToPreviousSlide);
    },
    keyControl: function(event){
        if(event.keyCode == 37){ // Left arrow
            carousel.goToPreviousSlide();
        }
        else if(event.keyCode == 39){ // Right arrow
            carousel.goToNextSlide();
        }
    },
    goToNextSlide: function(){
        carousel.current++;
        carousel.resetPanels();
    },
    goToPreviousSlide: function(){
        carousel.current--;
        carousel.resetPanels();
    }
};
</script>
</body>
</html>