Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                .slideshow
  ul.slideshow__list
    li.slideshow__item(data-src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/rtj_deadpool.jpg')
      figure.slideshow__image(style='background-image:url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/rtj_deadpool.jpg);')
    li.slideshow__item(data-src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/rtj_howrad.jpg')
      figure.slideshow__image(style='background-image:url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/rtj_howrad.jpg);')
    li.slideshow__item(data-src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/2071504-the_punisher_v5_08___kitchen_irish_02___23.jpg')
      figure.slideshow__image(style='background-image:url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/2071504-the_punisher_v5_08___kitchen_irish_02___23.jpg);')
    li.slideshow__item(data-src='https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/deadpool.jpg')
      figure.slideshow__image(style='background-image:url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/22914/deadpool.jpg);')
  .slideshow__nav.slideshow__nav--next.
    <svg height="48" viewBox="0 0 48 48" width="48" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" d="M17.17 32.92l9.17-9.17-9.17-9.17 2.83-2.83 12 12-12 12z"/></svg>
  .slideshow__nav.slideshow__nav--prev.
    <svg height="48" viewBox="0 0 48 48" width="48" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" d="M30.83 32.67l-9.17-9.17 9.17-9.17-2.83-2.83-12 12 12 12z"/></svg>
              
            
!

CSS

              
                @import 'breakpoint';

* {
  box-sizing: border-box;
}

$desktop: 800px;

html {
  height: 100%;
}

body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.slideshow {
  
  & {
    height: 100%;
    width: 100%;
    position: relative;
    overflow: hidden;
  }
  
  &__list {
    list-style: none;
    margin: 0;
    padding: 0;
    white-space: nowrap;
    font-size: 0;
    height: 100%;
    transition: all .6s cubic-bezier(0.360, 0.245, 0.155, 0.990);
  }
  
  &__item {
    width: 100%;
    height: 100%;
    position: relative;
    display: inline-block;
  }
  
  &__image {
    margin: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
  }
  
  &__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    color: #fff;    
    font-size: 1.25em;
    cursor: pointer;
    background-color: #000;
    opacity: 0.5;
    
    &.is-inactive {
      opacity: 0.5;
      cursor: default;
    }
    
    &.is-active {
      opacity: 1;
    }
    
    svg {
      display: block;
    }
    
    &--next {
      right: 0;
    }
    
    &--prev {
      left: 0;
    }    
  }
  
  &__thumbs {
    position: absolute;
    bottom: 1em;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    display: none;
    
    @include breakpoint($desktop) {
      display: block;
    }
  }
  
  &__thumbsItem {
    display: inline-block;
    width: 120px;
    height: 75px;
    background-size: cover;
    background-position: center;
    margin: 0 0.5em 0;
    border: 1px solid #fff;
    cursor: pointer;
    
    &.is-active {
      opacity: 0.5;
      cursor: default;
    }
  }
}

.dotNav {
  
  & {
    position: absolute;
    bottom: 1em;
    left: 50%;
    z-index: 20;
    transform: translateX(-50%);
    list-style: none;
    margin: 0;
    padding: 0;
    
    @include breakpoint($desktop) {
      display: none;
    }
  }
  
  &__item {
    display: inline-block;
    line-height: 1;
    width: 0.875em;
    height: 0.875em;
    border-radius: 0.875em;
    background-color: #fff;
    margin: 0 .5em;
    cursor: pointer;
    transition: opacity .3s ease;
    
    &.is-active {
      opacity: 0.5;
      cursor: default;
      scale: 0.9;
    }
  }
}
              
            
!

JS

              
                // Debounce
function debounce(a,b,c){var d;return function(){var e=this,f=arguments;clearTimeout(d),d=setTimeout(function(){d=null,c||a.apply(e,f)},b),c&&!d&&a.apply(e,f)}}

// Get siblings
var getSiblings = function (elem) {
  var siblings = [];
  var sibling = elem.parentNode.firstChild;
  for ( ; sibling; sibling = sibling.nextSibling ) {
      if ( sibling.nodeType === 1 && sibling !== elem ) {
          siblings.push( sibling );
      }
  }
  return siblings;
};

var Slideshow = function() {
  
  var 
    slideshow,
    slideList,
    slides,
    totalSlides,
    navNext,
    navPrev,
    clickCount,
    slideWidth,
    dots;
  
  var _init = function() {
    slideshow       = document.querySelector('.slideshow');
    slideList       = document.querySelector('.slideshow__list');
    navNext         = document.querySelector('.slideshow__nav--next');
    navPrev         = document.querySelector('.slideshow__nav--prev');
    slides          = document.querySelectorAll('.slideshow__item');
    slides          = Array.prototype.slice.call(slides);
    totalSlides     = slides.length;
    clickCount      = 0;
    
    _resize();
    _addEventHandlers();
    _setActiveNav();    
    _dotNav();
    _thumbNav();
    _setActiveDot(clickCount);    
    _setActivePagination(clickCount)
  }
  
  var _addEventHandlers = function() {
    navNext.addEventListener('click', _slideNext, false);
    navPrev.addEventListener('click', _slidePrev, false);
    window.addEventListener('resize', _resize, false);
  }
  
  var _dotNav = function() {
    var dotNav = document.createElement('ul');
    dotNav.classList.add('dotNav');
    slideshow.appendChild(dotNav);    
    slides.forEach(function(element, index) {
      _createDots(dotNav);
    });    
    _clickDots();
  }  
  
  var _createDots = function(dotNav) {
    var dot = document.createElement("li");
    dot.classList.add('dotNav__item');
    dotNav.appendChild(dot)
  }
  
  var _clickDots = function() {
    var dots = document.querySelectorAll('.dotNav__item');
    dots = Array.prototype.slice.call(dots);
    dots.forEach(function(element,index) {      
      element.addEventListener('click', _clickPagination.bind(null,element, index), false); 
    });
  }
  
  var _clickPagination = function(element, index) {  
    var siblings = getSiblings(element);
    siblings = Array.prototype.slice.call(siblings);    
    siblings.forEach(function(element) {
      element.classList.remove('is-active');      
    })  
    _setTransform(slideWidth, index);
    clickCount = index;
    if(clickCount === index) {
      element.classList.add('is-active');
    }
    _setActiveNav();
    _setActiveDot(index);
    _setActivePagination(index);
  }
  
  var _getDots = function() {
    var dots = document.querySelectorAll('.dotNav__item');
    dots = Array.prototype.slice.call(dots);    
    return dots;
  }
  
  var _setActiveDot = function(count) {
    var dots = _getDots();
    dots.forEach(function(element, index) {
      element.classList.remove('is-active');
      if(index === count) {
        element.classList.add('is-active');
      }
    })
  }
  
  var _setActiveNav = function() {
    if(clickCount === 0) {      
      navPrev.classList.add('is-inactive');
      navPrev.classList.remove('is-active');
      navNext.classList.add('is-active');
    } else {
      navPrev.classList.add('is-active');
    }
  }
  
  var _slideNext = function() {    
    clickCount++;    
    if(clickCount >= totalSlides) {
      clickCount = 0;
    }
    _setTransform(slideWidth, clickCount);
    _setActiveNav();
    _setActiveDot(clickCount);    
    _setActivePagination(clickCount);
  }
  
  var _slidePrev = function() {
    if(clickCount > 0 ) {
      clickCount--;      
      _setTransform(slideWidth, clickCount);
    }
    _setActiveNav();
    _setActiveDot(clickCount);
    _setActivePagination(clickCount);
  }
  
  var _thumbNav = function() {
    var thumbWrap = document.createElement('ul');
    thumbWrap.classList.add('slideshow__thumbs');
    slideshow.appendChild(thumbWrap);
    slides.forEach(function(element, index) {
      _createThumbs(element, thumbWrap);
    })
    _clickThumbs();
  }
  
  var _createThumbs = function(element, thumbWrap) {
    var thumbSrc = element.getAttribute('data-src');
    var thumb = document.createElement('li');
    thumb.classList.add('slideshow__thumbsItem')
    thumb.style.backgroundImage = 'url('+thumbSrc+')';
    thumbWrap.appendChild(thumb);      
  }
  
  var _clickThumbs = function() {
    var thumbs = document.querySelectorAll('.slideshow__thumbsItem');
    thumbs = Array.prototype.slice.call(thumbs);
    thumbs.forEach(function(element, index) {      
      element.addEventListener('click', _clickPagination.bind(null,element, index), false); 
    })
  }
  
  var _setActivePagination = function(count) {
    var thumbs = document.querySelectorAll('.slideshow__thumbsItem');
    thumbs = Array.prototype.slice.call(thumbs);
    thumbs.forEach(function(element, index) {
      element.classList.remove('is-active');
      if(index === count) {
        element.classList.add('is-active');
      }
    })    
  }
  
  var _setTransform = function(value, multiplier) {   
    var transformValue = value * multiplier;
    slideList.style['-webkit-transform'] = 'translateX(-'+transformValue+'px)';
		slideList.style['-moz-transform'] = 'translateX(-'+transformValue+'px)';
		slideList.style['-ms-transform'] = 'translateX(-'+transformValue+'px)';
		slideList.style['-o-transform'] = 'translateX(-'+transformValue+'px)';
		slideList.style['transform'] = 'translateX(-'+transformValue+'px)';
  }
  
  var _resize = debounce(function() {    
    slideWidth = slideshow.offsetWidth;
    _setTransform(slideWidth, clickCount);
  }, 50);
  
  return {
    init: _init
  }
}();

Slideshow.init();

              
            
!
999px

Console