How to build simple jQuery image slider with sliding or opacity effect?

Solution 1:

Before inspecting examples, you should know two jQuery functions which i used most.

index() returns value is an integer indicating the position of the first element within the jQuery object relative to its sibling elements.

eq() selects of an element based on its position (index value).

Basicly i take selected trigger element's index value and match this value on images with eq method.

- FadeIn / FadeOut effect.

- Sliding effect.

- alternate Mousewheel response.

html sample:

<ul class="images">
   <li>
      <img src="images/1.jpg" alt="1" />
   </li>
   <li>
      <img src="images/2.jpg" alt="2" />
   </li>
   ...
</ul>

<ul class="triggers">
   <li>1</li>
   <li>2</li>
   ...
</ul>
<span class="control prev">Prev</span>
<span class="control next">Next</span>

OPACITY EFFECT: jsFiddle.

css trick: overlapping images with position:absolute

ul.images { position:relative; }
  ul.images li { position:absolute; }

jQuery:

var target;
var triggers = $('ul.triggers li');
var images = $('ul.images li');
var lastElem = triggers.length-1;

triggers.first().addClass('active');
images.hide().first().show();

function sliderResponse(target) {
    images.fadeOut(300).eq(target).fadeIn(300);
    triggers.removeClass('active').eq(target).addClass('active');
}

SLIDING EFFECT: jsFiddle.

css trick: with double wrapper and use child as mask

.mask { float:left; margin:40px; width:270px; height:266px; overflow:hidden;  }
    ul.images { position:relative; top:0px;left:0px; }
    /* this width must be total of the images, it comes from jquery */
        ul.images li { float:left; }

jQuery:

var target;
var triggers = $('ul.triggers li');
var images = $('ul.images li');
var lastElem = triggers.length-1;
var mask = $('.mask ul.images');
var imgWidth = images.width();

triggers.first().addClass('active');
mask.css('width', imgWidth*(lastElem+1) +'px');

function sliderResponse(target) {
    mask.stop(true,false).animate({'left':'-'+ imgWidth*target +'px'},300);
    triggers.removeClass('active').eq(target).addClass('active');
}

Common jQuery response for both slider:

( triggers + next/prev click and timing )

triggers.click(function() {
    if ( !$(this).hasClass('active') ) {
        target = $(this).index();
        sliderResponse(target);
        resetTiming();
    }
});

$('.next').click(function() {
    target = $('ul.triggers li.active').index();
    target === lastElem ? target = 0 : target = target+1;
    sliderResponse(target);
    resetTiming();
});
$('.prev').click(function() {
    target = $('ul.triggers li.active').index();
    lastElem = triggers.length-1;
    target === 0 ? target = lastElem : target = target-1;
    sliderResponse(target);
    resetTiming();
});

function sliderTiming() {
    target = $('ul.triggers li.active').index();
    target === lastElem ? target = 0 : target = target+1;
    sliderResponse(target);
}

var timingRun = setInterval(function() { sliderTiming(); },5000);
function resetTiming() {
    clearInterval(timingRun);
    timingRun = setInterval(function() { sliderTiming(); },5000);
}

Solution 2:

Here is a simple and easy to understand code for Creating image slideshow using JavaScript without using Jquery.

<script language="JavaScript"> 
var i = 0; var path = new Array(); 

// LIST OF IMAGES 
path[0] = "image_1.gif"; 
path[1] = "image_2.gif"; 
path[2] = "image_3.gif"; 

function swapImage() { document.slide.src = path[i]; 
if(i < path.length - 1) i++; 
else i = 0; setTimeout("swapImage()",3000); 
} window.onload=swapImage;

</script> 

<img height="200" name="slide" src="image_1.gif" width="400" />

Solution 3:

I have recently created a solution with a gallery of images and a slider that apears when an image is clicked.

Take a look at the code here: GitHub Code

And a live example here: Code Example

var CreateGallery = function(parameters) {
	var self = this;
	this.galleryImages = [];
	this.galleryImagesSrcs = [];
	this.galleryImagesNum = 0;
	this.counter;
	this.galleryTitle = parameters.galleryTitle != undefined ? parameters.galleryTitle : 'Gallery image';
	this.maxMobileWidth = parameters.maxMobileWidth != undefined ? parameters.maxMobileWidth : 768;
	this.numMobileImg = parameters.numMobileImg != undefined ? parameters.numMobileImg : 2;
	this.maxTabletWidth = parameters.maxTabletWidth != undefined ? parameters.maxTabletWidth : 1024;
	this.numTabletImg = parameters.numTabletImg != undefined ? parameters.numTabletImg : 3;
	this.addModalGallery = function(gallerySelf = self){
		var $div = $(document.createElement('div')).attr({
			'id': 'modal-gallery'
		}).append($(document.createElement('div')).attr({
				'class': 'header'
			}).append($(document.createElement('button')).attr({
					'class': 'close-button',
					'type': 'button'
				}).html('&times;')
			).append($(document.createElement('h2')).text(gallerySelf.galleryTitle))
		).append($(document.createElement('div')).attr({
				'class': 'text-center'
			}).append($(document.createElement('img')).attr({
					'id': 'gallery-img'
				})
			).append($(document.createElement('button')).attr({
					'class': 'prev-button',
					'type': 'button'
				}).html('&#9668;')
			).append($(document.createElement('button')).attr({
					'class': 'next-button',
					'type': 'button'
				}).html('&#9658;')
			)
		);
		parameters.element.after($div);
	};
	$(document).on('click', 'button.prev-button', {self: self}, function() {
		var $currImg = self.counter >= 1 ? self.galleryImages[--self.counter] : self.galleryImages[self.counter];
		var $currHash = self.galleryImagesSrcs[self.counter];
		var $src = $currImg.src;
		window.location.hash = $currHash;
		$('img#gallery-img').attr('src', $src);
		$('div#modal-gallery h2').text(self.galleryTitle + ' ' + (self.counter + 1));
	});
	$(document).on('click', 'button.next-button', {self: self}, function() {
		var $currImg = self.counter < (self.galleryImagesNum - 1) ? self.galleryImages[++self.counter] : self.galleryImages[self.counter];
		var $currHash = self.galleryImagesSrcs[self.counter];
		var $src = $currImg.src;
		window.location.hash = $currHash;
		$('img#gallery-img').attr('src', $src);
		$('div#modal-gallery h2').text(self.galleryTitle + ' ' + (self.counter + 1));
	});
	$(document).on('click', 'div#modal-gallery button.close-button', function() {
		$('#modal-gallery').css('position', 'relative');
		$('#modal-gallery').hide();
		$('body').css('overflow', 'visible');
	});
	parameters.element.find('a').on('click', {self: self}, function(event) {
		event.preventDefault();
		$('#modal-gallery').css('position', 'fixed');
		$('#modal-gallery').show();
		$('body').css('overflow', 'hidden');
		var $currHash = this.hash.substr(1);
		self.counter = self.galleryImagesSrcs.indexOf($currHash); 
		var $src = $currHash;
		window.location.hash = $currHash;
		$('img#gallery-img').attr('src', $src);
		$('div#modal-gallery h2').text(self.galleryTitle + ' ' + (self.counter + 1));
	});
	this.sizeGallery = function(gallerySelf = self) {
		var $modalGallery = $(document).find("div#modal-gallery");
		if($modalGallery.length <= 0) {
			this.addModalGallery();
		}
		var $windowWidth = $(window).width();
		var $parentWidth = parameters.element.width();
		var $thumbnailHref = parameters.element.find('img:first').attr('src');
		if($windowWidth < gallerySelf.maxMobileWidth) {
			var percentMobile = Math.floor(100 / gallerySelf.numMobileImg); 
			var emMobile = 0;
			var pxMobile = 2;
//                        var emMobile = gallerySelf.numMobileImg * 0.4;
//                        var pxMobile = gallerySelf.numMobileImg * 2;
			parameters.element.find('img').css('width', 'calc('+percentMobile+'% - '+emMobile+'em - '+pxMobile+'px)');
		} else if($windowWidth < gallerySelf.maxTabletWidth) {
			var percentTablet = Math.floor(100 / gallerySelf.numTabletImg); 
			var emTablet = 0;
			var pxTablet = 2;
//                        var emTablet = gallerySelf.numMobileImg * 0.4;
//                        var pxTablet = gallerySelf.numMobileImg * 2;
			parameters.element.find('img').css('width', 'calc('+percentTablet+'% - '+emTablet+'em - '+pxTablet+'px)');
		} else {
			var $thumbImg = new Image();
			$thumbImg.src = $thumbnailHref;
			$thumbImg.onload = function() {
				var $thumbnailWidth = this.width;
				if($parentWidth > 0 && $thumbnailWidth > 0) {
					parameters.element.find('img').css('width', (Math.ceil($thumbnailWidth * 100 / $parentWidth))+'%');
				}
			};
		}
	};
	this.startGallery = function(gallerySelf = self) {
		parameters.element.find('a').each(function(index, el) {
			var $currHash = el.hash.substr(1);
			var $img = new Image();
			$img.src = $currHash;
			gallerySelf.galleryImages.push($img);
			gallerySelf.galleryImagesSrcs.push($currHash);
		});
		this.galleryImagesNum = this.galleryImages.length;
	};
	this.sizeGallery();
	this.startGallery();
};
var myGallery;
$(window).on('load', function() {
	myGallery = new CreateGallery({
		element: $('#div-gallery'),
		maxMobileWidth: 768,
		numMobileImg: 2,
		maxTabletWidth: 1024,
		numTabletImg: 3
	});
});
$(window).on('resize', function() {
	myGallery.sizeGallery();
});

#div-gallery {
	text-align: center;
}
#div-gallery img {
	margin-right: auto;
	margin-left: auto;
}
div#modal-gallery {
	top: 0;
	left: 0;
	width: 100%;
	max-width: none;
	height: 100vh;
	min-height: 100vh;
	margin-left: 0;
	border: 0;
	border-radius: 0;
	z-index: 1006;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	display: none;
	background-color: #fefefe;
	position: relative;
	margin-right: auto;
	overflow-y: auto;
	padding: 0;
}
div#modal-gallery div.header {
	position: relative; 
}
div#modal-gallery div.header h2 {
	margin-left: 1rem; 
}
div#modal-gallery div.header button.close-button {
	position: absolute;
	top: calc(50% - 1em);
	right: 1rem;
}
div#modal-gallery img {
	display: block;
	max-width: 98%;
	max-height: calc(100vh - 5em);
	margin-right: auto;
	margin-left: auto;
}
div#modal-gallery div.text-center {
	position: relative;
}
button.close-button {
	display: inline-block;
	padding: 6px 12px;
	margin-bottom: 0;
	font-size: 20px;
	font-weight: 400;
	line-height: 1.42857143;
	text-align: center;
	white-space: nowrap;
	vertical-align: middle;
	-ms-touch-action: manipulation;
	touch-action: manipulation;
	cursor: pointer;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	background-image: none;
	border: 1px solid transparent;
	border-radius: 4px;
	color: #333;
	background-color: #fff;
	border-color: #ccc;
}
button.close-button:hover, button.close-button:focus {
	background-color: #ddd;
}
button.next-button:hover, button.prev-button:hover, button.next-button:focus, button.prev-button:focus {
	color: #fff;
	text-decoration: none;
	filter: alpha(opacity=90);
	outline: 0;
	opacity: .9;
}
button.next-button, button.prev-button {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	width: 15%;
	font-size: 20px;
	color: #fff;
	text-align: center;
	text-shadow: 0 1px 2px rgba(0,0,0,.6);
	background-color: rgba(0,0,0,0);
	filter: alpha(opacity=50);
	opacity: .5;
	border: none;
}
button.next-button {
	right: 0;
	left: auto;
	background-image: -webkit-linear-gradient(left,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%);
	background-image: -o-linear-gradient(left,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%);
	background-image: -webkit-gradient(linear,left top,right top,from(rgba(0,0,0,.0001)),to(rgba(0,0,0,.5)));
	background-image: linear-gradient(to right,rgba(0,0,0,.0001) 0,rgba(0,0,0,.5) 100%);
	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00000000', endColorstr='#80000000', GradientType=1);
	background-repeat: repeat-x;
}
button.prev-button {
	background-image: -webkit-linear-gradient(left,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%);
	background-image: -o-linear-gradient(left,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%);
	background-image: -webkit-gradient(linear,left top,right top,from(rgba(0,0,0,.5)),to(rgba(0,0,0,.0001)));
	background-image: linear-gradient(to right,rgba(0,0,0,.5) 0,rgba(0,0,0,.0001) 100%);
	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000', endColorstr='#00000000', GradientType=1);
	background-repeat: repeat-x;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="div-gallery">
	<a href="#http://placehold.it/1024x1024/ff0000/000000?text=Gallery+image+1"><img src="http://placehold.it/300x300/ff0000/000000?text=Gallery+image+1" alt=""></a>
	<a href="#http://placehold.it/1024x1024/ff4000/000000?text=Gallery+image+2"><img src="http://placehold.it/300x300/ff4000/000000?text=Gallery+image+2" alt=""></a>
	<a href="#http://placehold.it/1024x1024/ff8000/000000?text=Gallery+image+3"><img src="http://placehold.it/300x300/ff8000/000000?text=Gallery+image+3" alt=""></a>
	<a href="#http://placehold.it/1024x1024/ffbf00/000000?text=Gallery+image+4"><img src="http://placehold.it/300x300/ffbf00/000000?text=Gallery+image+4" alt=""></a>
	<a href="#http://placehold.it/1024x1024/ffff00/000000?text=Gallery+image+5"><img src="http://placehold.it/300x300/ffff00/000000?text=Gallery+image+5" alt=""></a>
	<a href="#http://placehold.it/1024x1024/bfff00/000000?text=Gallery+image+6"><img src="http://placehold.it/300x300/bfff00/000000?text=Gallery+image+6" alt=""></a>
	<a href="#http://placehold.it/1024x1024/80ff00/000000?text=Gallery+image+7"><img src="http://placehold.it/300x300/80ff00/000000?text=Gallery+image+7" alt=""></a>
	<a href="#http://placehold.it/1024x1024/40ff00/000000?text=Gallery+image+8"><img src="http://placehold.it/300x300/40ff00/000000?text=Gallery+image+8" alt=""></a>
	<a href="#http://placehold.it/1024x1024/00ff00/000000?text=Gallery+image+9"><img src="http://placehold.it/300x300/00ff00/000000?text=Gallery+image+9" alt=""></a>
	<a href="#http://placehold.it/1024x1024/00ff40/000000?text=Gallery+image+10"><img src="http://placehold.it/300x300/00ff40/000000?text=Gallery+image+10" alt=""></a>
	<a href="#http://placehold.it/1024x1024/00ff80/000000?text=Gallery+image+11"><img src="http://placehold.it/300x300/00ff80/000000?text=Gallery+image+11" alt=""></a>
	<a href="#http://placehold.it/1024x1024/00ffbf/000000?text=Gallery+image+12"><img src="http://placehold.it/300x300/00ffbf/000000?text=Gallery+image+12" alt=""></a>
	<a href="#http://placehold.it/1024x1024/00ffff/000000?text=Gallery+image+13"><img src="http://placehold.it/300x300/00ffff/000000?text=Gallery+image+13" alt=""></a>
	<a href="#http://placehold.it/1024x1024/00bfff/000000?text=Gallery+image+14"><img src="http://placehold.it/300x300/00bfff/000000?text=Gallery+image+14" alt=""></a>
	<a href="#http://placehold.it/1024x1024/0080ff/000000?text=Gallery+image+15"><img src="http://placehold.it/300x300/0080ff/000000?text=Gallery+image+15" alt=""></a>
	<a href="#http://placehold.it/1024x1024/0040ff/000000?text=Gallery+image+16"><img src="http://placehold.it/300x300/0040ff/000000?text=Gallery+image+16" alt=""></a>
</div>

Solution 4:

Checkout this whole bunch of code to build simple jquery image slider. Copy and save this file to local machine and test it. You can modify it according to your requirement.

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

<script>
  var current_img = 1;
  var i;

  $(document).ready(function(){
    var imgs = $("#image").find("img");

    function show_img(){
      for (i = 1; i < imgs.length+1; i++) {
        if(i == current_img){
          $(imgs[i-1]).show();
        }else{
          $(imgs[i-1]).hide()
        }
      }
    }

    $("#prev").click(function(){
      if(current_img == 1){
        current_img = imgs.length;
      }else{
        current_img = current_img - 1
      }
      show_img();
    });

    $("#next").click(function(){
      if(current_img == imgs.length){
        current_img = 1;
      }else{
        current_img = current_img + 1
      }
      show_img();
    });

  });

</script>
</head>
<body>

<div style="margin-top: 100px;"></div>
<div class="container">
  <div class="col-sm-3">
    <button type="button" id="prev" class="btn">Previous</button>
  </div>

  <div class="col-sm-6">
    <div id="image">
      <img src="https://www.w3schools.com/html/pulpitrock.jpg" alt="image1">
      <img src="https://www.w3schools.com/cSS/img_forest.jpg" alt="image2" hidden="true" style="max-width: 500px;">
      <img src="https://www.w3schools.com/html/img_chania.jpg" alt="image3" hidden="true">
    </div>
  </div>

  <div class="col-sm-3">
    <button type="button" id="next" class="btn">Next</button>
  </div>
</div>

</body>
</html>

Solution 5:

I have written a tutorial on creating a slideshow, The tutorial page In case the link becomes invalid I have included the code in my answer below.

the html:

<div id="slideShow">
 <div id="slideShowWindow">
 <div class="slide">
 <img src="”img1.png”/">
 <div class="slideText">
 <h2>The Slide Title</h2> 
 <p>This is the slide text</p>
 </div> <!-- </slideText> -->
 </div> <!-- </slide> repeat as many times as needed --> 
 </div> <!-- </slideShowWindow> -->
 </div> <!-- </slideshow> -->

css:

img {
 display: block;
 width: 100%;
 height: auto;
}
p{
 background:none;
 color:#ffffff;
}
#slideShow #slideShowWindow {
 width: 650px;
 height: 450px;
 margin: 0;
 padding: 0;
 position: relative;
 overflow:hidden;
 margin-left: auto;
 margin-right:auto;
}

#slideShow #slideShowWindow .slide {
 margin: 0;
 padding: 0;
 width: 650px;
 height: 450px;
 float: left;
 position: relative;
 margin-left:auto;
 margin-right: auto;
 }

#slideshow #slideshowWindow .slide, .slideText {
    position:absolute;
    bottom:18px;
    left:0;
    width:100%;
    height:auto;
    margin:0;
    padding:0;
    color:#ffffff;
    font-family:Myriad Pro, Arial, Helvetica, sans-serif;
} 
.slideText {
 background: rgba(128, 128, 128, 0.49);
}

#slideshow #slideshowWindow .slide .slideText h2, 
#slideshow #slideshowWindow .slide .slideText p {
    margin:10px;
    padding:15px;
}

.slideNav {
 display: block;
 text-indent: -10000px;
 position: absolute;
 cursor: pointer;
}
#leftNav {
 left: 0;
 bottom: 0;
 width: 48px;
 height: 48px;
 background-image: url("../Images/plus_add_minus.png");
 background-repeat: no-repeat;
 z-index: 10;
}
#rightNav {
 right: 0;
 bottom: 0;
 width: 48px;
 height: 48px;
 background-image: url("../Images/plus_add_green.png");
 background-repeat: no-repeat;
 z-index: 10; }

jQuery:

$(document).ready(function () {

 var currentPosition = 0;
 var slideWidth = 650;
 var slides = $('.slide');
 var numberOfSlides = slides.length;
 var slideShowInterval;
 var speed = 3000;

 //Assign a timer, so it will run periodically
 slideShowInterval = setInterval(changePosition, speed);

 slides.wrapAll('<div id="slidesHolder"></div>');

 slides.css({ 'float': 'left' });

 //set #slidesHolder width equal to the total width of all the slides
 $('#slidesHolder').css('width', slideWidth * numberOfSlides);

 $('#slideShowWindow')
 .prepend('<span class="slideNav" id="leftNav">Move Left</span>')
 .append('<span class="slideNav" id="rightNav">Move Right</span>');

 manageNav(currentPosition);

 //tell the buttons what to do when clicked
 $('.slideNav').bind('click', function () {

 //determine new position
 currentPosition = ($(this).attr('id') === 'rightNav')
 ? currentPosition + 1 : currentPosition - 1;

 //hide/show controls
 manageNav(currentPosition);
 clearInterval(slideShowInterval);
 slideShowInterval = setInterval(changePosition, speed);
 moveSlide();
 });

 function manageNav(position) {
 //hide left arrow if position is first slide
 if (position === 0) {
 $('#leftNav').hide();
 }
 else {
 $('#leftNav').show();
 }
 //hide right arrow is slide position is last slide
 if (position === numberOfSlides - 1) {
 $('#rightNav').hide();
 }
 else {
 $('#rightNav').show();
 }
 }


 //changePosition: this is called when the slide is moved by the timer and NOT when the next or previous buttons are clicked
 function changePosition() {
 if (currentPosition === numberOfSlides - 1) {
 currentPosition = 0;
 manageNav(currentPosition);
 } else {
 currentPosition++;
 manageNav(currentPosition);
 }
 moveSlide();
 }


 //moveSlide: this function moves the slide 
 function moveSlide() {
 $('#slidesHolder').animate({ 'marginLeft': slideWidth * (-currentPosition) });
 }

});