Modifier temps affichage image dans un carousel

Bonjour à tous

J'utilise un script (qui n'est pas de moi) pour afficher un carousel d'images.

Il fonctionne très très bien.
Cependant, je n'arrrive absolument pas à rallongé le temps d'affichage des images.

Voici le HTML

Code:

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<!DOCTYPE html><html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>CodePen - Slideshow Parallax with TweenMax</title>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
<link rel='stylesheet' href='https://fonts.googleapis.com/css?family=Open+Sans%3A400%2C400italic%2C600%2C700%2C700italic%7COswald%3A400%2C300%7CVollkorn%3A400%2C400italic'><link rel="stylesheet" href="./style.css">
 
 
</head>
<body>
<!-- partial:index.partial.html -->
<main class="main-content">
  <section class="slideshow">
    <div class="slideshow-inner">
      <div class="slides">
        <div class="slide is-active ">
          <div class="slide-content">
            <div class="caption">
              <div class="title">Image SDIS 1</div>
              <div class="text">
                <p>Slide description 1</p>
              </div> 
              <!--
              <a href="#" class="btn">
                <span class="btn-inner">Learn More</span>
              </a>
              -->
            </div>
          </div>
          <div class="image-container"> 
            <img src="images/slider-1.jpg" alt="" class="image" />          </div>
        </div>
        <div class="slide">
          <div class="slide-content">
            <div class="caption">
              <div class="title">Image SDIS 2</div>
              <div class="text">
                <p>Slide description 2</p>
              </div> 
              <!--
              <a href="#" class="btn">
                <span class="btn-inner">Learn More</span>
              </a>
              -->
            </div>
          </div>
          <div class="image-container">
            <img src="images/slider-2.jpg" alt="" class="image" />
          </div>
        </div>
        <div class="slide">
          <div class="slide-content">
            <div class="caption">
              <div class="title">Image SDIS 3</div>
              <div class="text">
                <p>Slide description 3</p>
              </div> 
              <!--
              <a href="#" class="btn">
                <span class="btn-inner">Learn More</span>
              </a>
              -->
            </div>
          </div>
          <div class="image-container">
            <img src="images/slider-3.jpg" alt="" class="image" />
          </div>
        </div>
        <div class="slide">
          <div class="slide-content">
            <div class="caption">
              <div class="title">Image SDIS 4</div>
              <div class="text">
                <p>Slide description 4</p>
              </div> 
              <!--
              <a href="#" class="btn">
                <span class="btn-inner">Learn More</span>
              </a>
              -->
            </div>
          </div>
          <div class="image-container"> 
            <img src="images/slider-4.jpg" alt="" class="image" />
          </div>
        </div>
      </div>
      <div class="pagination">
        <div class="item is-active"> 
          <span class="icon">1</span>
        </div>
        <div class="item">
          <span class="icon">2</span>
        </div>
        <div class="item">
          <span class="icon">3</span>
        </div>
        <div class="item">
          <span class="icon">4</span>
        </div>
      </div>
      <div class="arrows">
        <div class="arrow prev">
          <span class="svg svg-arrow-left">
            <svg version="1.1" id="svg4-Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="14px" height="26px" viewBox="0 0 14 26" enable-background="new 0 0 14 26" xml:space="preserve"> <path d="M13,26c-0.256,0-0.512-0.098-0.707-0.293l-12-12c-0.391-0.391-0.391-1.023,0-1.414l12-12c0.391-0.391,1.023-0.391,1.414,0s0.391,1.023,0,1.414L2.414,13l11.293,11.293c0.391,0.391,0.391,1.023,0,1.414C13.512,25.902,13.256,26,13,26z"/> </svg>
            <span class="alt sr-only"></span>
          </span>
        </div>
        <div class="arrow next">
          <span class="svg svg-arrow-right">
            <svg version="1.1" id="svg5-Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="14px" height="26px" viewBox="0 0 14 26" enable-background="new 0 0 14 26" xml:space="preserve"> <path d="M1,0c0.256,0,0.512,0.098,0.707,0.293l12,12c0.391,0.391,0.391,1.023,0,1.414l-12,12c-0.391,0.391-1.023,0.391-1.414,0s-0.391-1.023,0-1.414L11.586,13L0.293,1.707c-0.391-0.391-0.391-1.023,0-1.414C0.488,0.098,0.744,0,1,0z"/> </svg>
            <span class="alt sr-only"></span>
          </span>
        </div>
      </div>
    </div> 
  </section>
</main>
<!-- partial -->
  <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/1.19.1/TweenMax.min.js'></script><script  src="./script.js"></script>
 
 
</body>
</html>

Le JS:

Code:

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var slideshowDuration = 4000;var slideshow=$('.main-content .slideshow');
 
 
function slideshowSwitch(slideshow,index,auto){
  if(slideshow.data('wait')) return;
 
 
  var slides = slideshow.find('.slide');
  var pages = slideshow.find('.pagination');
  var activeSlide = slides.filter('.is-active');
  var activeSlideImage = activeSlide.find('.image-container');
  var newSlide = slides.eq(index);
  var newSlideImage = newSlide.find('.image-container');
  var newSlideContent = newSlide.find('.slide-content');
  var newSlideElements=newSlide.find('.caption > *');
  if(newSlide.is(activeSlide))return;
 
 
  newSlide.addClass('is-new');
  var timeout=slideshow.data('timeout');
  clearTimeout(timeout);
  slideshow.data('wait',true);
  var transition=slideshow.attr('data-transition');
  if(transition=='fade'){
    newSlide.css({
      display:'block',
      zIndex:2
    });
    newSlideImage.css({
      opacity:0
    });
 
 
    TweenMax.to(newSlideImage,1,{
      alpha:1,
      onComplete:function(){
        newSlide.addClass('is-active').removeClass('is-new');
        activeSlide.removeClass('is-active');
        newSlide.css({display:'',zIndex:''});
        newSlideImage.css({opacity:''});
        slideshow.find('.pagination').trigger('check');
        slideshow.data('wait',false);
        if(auto){
          timeout=setTimeout(function(){
            slideshowNext(slideshow,false,true);
          },slideshowDuration);
          slideshow.data('timeout',timeout);}}});
  } else {
    if(newSlide.index()>activeSlide.index()){
      var newSlideRight=0;
      var newSlideLeft='auto';
      var newSlideImageRight=-slideshow.width()/8;
      var newSlideImageLeft='auto';
      var newSlideImageToRight=0;
      var newSlideImageToLeft='auto';
      var newSlideContentLeft='auto';
      var newSlideContentRight=0;
      var activeSlideImageLeft=-slideshow.width()/4;
    } else {
      var newSlideRight='';
      var newSlideLeft=0;
      var newSlideImageRight='auto';
      var newSlideImageLeft=-slideshow.width()/8;
      var newSlideImageToRight='';
      var newSlideImageToLeft=0;
      var newSlideContentLeft=0;
      var newSlideContentRight='auto';
      var activeSlideImageLeft=slideshow.width()/4;
    }
 
 
    newSlide.css({
      display:'block',
      width:0,
      right:newSlideRight,
      left:newSlideLeft
      ,zIndex:2
    });
 
 
    newSlideImage.css({
      width:slideshow.width(),
      right:newSlideImageRight,
      left:newSlideImageLeft
    });
 
 
    newSlideContent.css({
      width:slideshow.width(),
      left:newSlideContentLeft,
      right:newSlideContentRight
    });
 
 
    activeSlideImage.css({
      left:0
    });
 
 
    TweenMax.set(newSlideElements,{y:20,force3D:true});
    TweenMax.to(activeSlideImage,1,{
      left:activeSlideImageLeft,
      ease:Power3.easeInOut
    });
 
 
    TweenMax.to(newSlide,1,{
      width:slideshow.width(),
      ease:Power3.easeInOut
    });
 
 
    TweenMax.to(newSlideImage,1,{
      right:newSlideImageToRight,
      left:newSlideImageToLeft,
      ease:Power3.easeInOut
    });
 
 
    TweenMax.staggerFromTo(newSlideElements,0.8,{alpha:0,y:60},{alpha:1,y:0,ease:Power3.easeOut,force3D:true,delay:0.6},0.1,function(){
      newSlide.addClass('is-active').removeClass('is-new');
      activeSlide.removeClass('is-active');
      newSlide.css({
        display:'',
        width:'',
        left:'',
        zIndex:''
      });
 
 
      newSlideImage.css({
        width:'',
        right:'',
        left:''
      });
 
 
      newSlideContent.css({
        width:'',
        left:''
      });
 
 
      newSlideElements.css({
        opacity:'',
        transform:''
      });
 
 
      activeSlideImage.css({
        left:''
      });
 
 
      slideshow.find('.pagination').trigger('check');
      slideshow.data('wait',false);
      if(auto){
        timeout=setTimeout(function(){
          slideshowNext(slideshow,false,true);
        },slideshowDuration);
        slideshow.data('timeout',timeout);
      }
    });
  }
}
 
 
function slideshowNext(slideshow,previous,auto){
  var slides=slideshow.find('.slide');
  var activeSlide=slides.filter('.is-active');
  var newSlide=null;
  if(previous){
    newSlide=activeSlide.prev('.slide');
    if(newSlide.length === 0) {
      newSlide=slides.last();
    }
  } else {
    newSlide=activeSlide.next('.slide');
    if(newSlide.length==0)
      newSlide=slides.filter('.slide').first();
  }
 
 
  slideshowSwitch(slideshow,newSlide.index(),auto);
}
 
 
function homeSlideshowParallax(){
  var scrollTop=$(window).scrollTop();
  if(scrollTop>windowHeight) return;
  var inner=slideshow.find('.slideshow-inner');
  var newHeight=windowHeight-(scrollTop/2);
  var newTop=scrollTop*0.8;
 
 
  inner.css({
    transform:'translateY('+newTop+'px)',height:newHeight
  });
}
 
 
$(document).ready(function() {
 $('.slide').addClass('is-loaded');
 
 
 $('.slideshow .arrows .arrow').on('click',function(){
  slideshowNext($(this).closest('.slideshow'),$(this).hasClass('prev'));
});
 
 
 $('.slideshow .pagination .item').on('click',function(){
  slideshowSwitch($(this).closest('.slideshow'),$(this).index());
});
 
 
 $('.slideshow .pagination').on('check',function(){
  var slideshow=$(this).closest('.slideshow');
  var pages=$(this).find('.item');
  var index=slideshow.find('.slides .is-active').index();
  pages.removeClass('is-active');
  pages.eq(index).addClass('is-active');
});
 
 
/* Lazyloading
$('.slideshow').each(function(){
  var slideshow=$(this);
  var images=slideshow.find('.image').not('.is-loaded');
  images.on('loaded',function(){
    var image=$(this);
    var slide=image.closest('.slide');
    slide.addClass('is-loaded');
  });
*/
 
 
var timeout=setTimeout(function(){
  slideshowNext(slideshow,false,true);
},slideshowDuration);
 
 
slideshow.data('timeout',timeout);
});
 
 
if($('.main-content .slideshow').length > 1) {
  $(window).on('scroll',homeSlideshowParallax);
}

Le CSS:

Code:

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body {  font: 14px/2 "Open sans", sans-serif;
  letter-spacing: 0.05em;
}
 
 
.btn {
  display: inline-block;
  padding: 13px 20px;
  color: #fff;
  text-decoration: none;
  position: relative;
  background: transparent;
  border: 1px solid #e1e1e1;
  font: 12px/1.2 "Oswald", sans-serif;
  letter-spacing: 0.4em;
  text-align: center;
  text-indent: 2px;
  text-transform: uppercase;
  transition: color 0.1s linear 0.05s;
}
.btn::before {
  content: "";
  display: block;
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: #e1e1e1;
  z-index: 1;
  opacity: 0;
  transition: height 0.2s ease, top 0.2s ease, opacity 0s linear 0.2s;
}
.btn::after {
  transition: border 0.1s linear 0.05s;
}
.btn .btn-inner {
  position: relative;
  z-index: 2;
}
.btn:hover {
  color: #373737;
  transition: color 0.1s linear 0s;
}
.btn:hover::before {
  top: 0;
  height: 100%;
  opacity: 1;
  transition: height 0.2s ease, top 0.2s ease, opacity 0s linear 0s;
}
.btn:hover::after {
  border-color: #373737;
  transition: border 0.1s linear 0s;
}
 
 
.slideshow {
  overflow: hidden;
  position: relative;
  width: 100%;
  height: 100vh;
  z-index: 1;
}
.slideshow .slideshow-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.slideshow .slides {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.slideshow .slide {
  display: none;
  overflow: hidden;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.slideshow .slide.is-active {
  display: block;
}
.slideshow .slide.is-loaded {
  opacity: 1;
}
.slideshow .slide .caption {
  padding: 0 100px;
}
.slideshow .slide .image-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-position: center;
  z-index: 1;
  background-size: cover;
  image-rendering: optimizeQuality;
}
.slideshow .slide .image-container::before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
}
.slideshow .slide .image {
  width: 100%;
  width: 100%;
  object-fit: cover;
  height: 100%;
}
.slideshow .slide-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  color: #fff;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}
.slideshow .slide .title {
  margin: 0 auto 15px;
  max-width: 1000px;
  font: 300 50px/1.2 "Oswald", sans-serif;
  letter-spacing: 0.35em;
  text-transform: uppercase;
}
.slideshow .slide .text {
  margin: 0 auto;
  max-width: 1000px;
  font-size: 18px;
  line-height: 1.4;
}
.slideshow .slide .btn {
  margin: 15px 0 0;
  border-color: #fff;
}
.slideshow .slide .btn::before {
  background: #fff;
}
.slideshow .pagination {
  position: absolute;
  bottom: 35px;
  left: 0;
  width: 100%;
  height: 12px;
  cursor: default;
  z-index: 2;
  text-align: center;
}
.slideshow .pagination .item {
  display: inline-block;
  padding: 15px 5px;
  position: relative;
  width: 46px;
  height: 32px;
  cursor: pointer;
  text-indent: -999em;
  z-index: 1;
}
.slideshow .pagination .item + .page {
  margin-left: -2px;
}
.slideshow .pagination .item::before {
  content: "";
  display: block;
  position: absolute;
  top: 15px;
  left: 5px;
  width: 36px;
  height: 2px;
  background: rgba(255, 255, 255, 0.5);
  transition: background 0.2s ease;
}
.slideshow .pagination .item::after {
  width: 0;
  background: #fff;
  z-index: 2;
  transition: width 0.2s ease;
}
.slideshow .pagination .item:hover::before, .slideshow .pagination .item.is-active::before {
  background-color: #fff;
}
.slideshow .arrows .arrow {
  margin: -33px 0 0;
  padding: 20px;
  position: absolute;
  top: 50%;
  cursor: pointer;
  z-index: 3;
}
.slideshow .arrows .prev {
  left: 30px;
}
.slideshow .arrows .prev:hover .svg {
  left: -10px;
}
.slideshow .arrows .next {
  right: 30px;
}
.slideshow .arrows .next:hover .svg {
  left: 10px;
}
.slideshow .arrows .svg {
  position: relative;
  left: 0;
  width: 14px;
  height: 26px;
  fill: #fff;
  transition: left 0.2s ease;
}

Pourriez vous m'aider car j'ai essayé de modifier le

Code:

var slideshowDuration = 4000;

mais cela ne semble rien faire.

Merci à vous et bon dimanche