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Image rotator jQuery css

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Créer une diaporama avec description – un didacticiel sur la façon de créer un « image rotator » avec jQuery et CSS.

Ce tutoriel va vous aider à comprendre comment créer vos propres diaporamas avec des effets de calques sympas.

Voir la démo

Etape 1. HTML – Image Rotator

main_image Section HTML

<div class="main_image">
	<img src="banner1.jpg" alt="" />
	<div class="desc">
		<a href="#" class="collapse">Close Me!</a>
		<div class="block">
			<h2>Title</h2>
			<small>Date</small>
			<p>Copy</p>
		</div>
	</div>
</div>

image_thumb Section HTML

<div class="image_thumb">
	<ul>
		<li>
			<a href="banner1.jpg"><img src="banner1_thumb.jpg" alt="Image Name" /></a>
			<div class="block">
				<h2>Title</h2>
				<small>Date</small>
				<p>Copy</p>
			</div>
		</li>
	</ul>
</div>

Etape 2. CSS – Image Rotator

main_image section CSS

.main_image {
	width: 598px;
	height: 456px;
	float: left;
	background: #333;
	position: relative;
	overflow: hidden; /*--Overflow hidden allows the description to toggle/tuck away as it slides down--*/
	color: #fff;
}
.main_image h2 {
	font-size: 2em;
	font-weight: normal;
	margin: 0 0 5px;
	padding: 10px;
}
.main_image p {
	font-size: 1.2em;
	line-height: 1.6em;
	padding: 10px;
	margin: 0;
}
.block small { /*--We'll be using this same style on our thumbnail list--*/
	font-size: 1em;
	padding: 0 0 0 20px;
	background: url(icon_calendar.gif) no-repeat 0 center;
}
.main_image .block small {margin-left: 10px;}
.main_image .desc{
	position: absolute;
	bottom: 0;
	left: 0; /*--Stick the desc class to the bottom of our main image container--*/
	width: 100%;
	display: none; /*--Hide description by default, if js is enabled, we will show this--*/
}
.main_image .block{
	width: 100%;
	background: #111;
	border-top: 1px solid #000;
}
.main_image a.collapse { /*--This is our hide/show tab--*/
	background: url(btn_collapse.gif) no-repeat left top;
	height: 27px;
	width: 93px;
	text-indent: -99999px;
	position: absolute;
	top: -27px;
	right: 20px;
}
.main_image a.show {background-position: left bottom;}

image_thumb section CSS

.image_thumb {
	float: left;
	width: 299px;
	background: #f0f0f0;
	border-right: 1px solid #fff;
	border-top: 1px solid #ccc;
}
.image_thumb img {
	border: 1px solid #ccc;
	padding: 5px;
	background: #fff;
	float: left;
}
.image_thumb ul {
	margin: 0;
	padding: 0;
	list-style: none;
}
.image_thumb ul li{
	margin: 0;
	padding: 12px 10px;
	background: #f0f0f0 url(nav_a.gif) repeat-x;
	width: 279px;
	float: left;
	border-bottom: 1px solid #ccc;
	border-top: 1px solid #fff;
	border-right: 1px solid #ccc;
}
.image_thumb ul li.hover { /*--Hover State--*/
	background: #ddd;
	cursor: pointer;
}
.image_thumb ul li.active { /*--Active State--*/
	background: #fff;
	cursor: default;
}
html .image_thumb ul li h2 {
	font-size: 1.5em;
	margin: 5px 0;
	padding: 0;
}
.image_thumb ul li .block {
	float: left;
	margin-left: 10px;
	padding: 0;
	width: 170px;
}
.image_thumb ul li p{display: none;}/*--Hide the description on the list items--*/

Etape 3. jQuery – Image Rotation Effect

$(".main_image .desc").show(); //Show Banner
$(".main_image .block").animate({ opacity: 0.85 }, 1 ); //Set Opacity
$(".image_thumb ul li:first").addClass('active'); //Add the active class (highlights the very first list item by default)
$(".image_thumb ul li").click(function(){
	//Set Variables
	var imgAlt = $(this).find('img').attr("alt"); //Get Alt Tag of Image
	var imgTitle = $(this).find('a').attr("href"); //Get Main Image URL
	var imgDesc = $(this).find('.block').html();  //Get HTML of the "block" container
	var imgDescHeight = $(".main_image").find('.block').height(); //Find the height of the "block"

	if ($(this).is(".active")) {  //If the list item is active/selected, then...
		return false; // Don't click through - Prevents repetitive animations on active/selected list-item
	} else { //If not active then...
		//Animate the Description
		$(".main_image .block").animate({ opacity: 0, marginBottom: -imgDescHeight }, 250 , function() { //Pull the block down (negative bottom margin of its own height)
			$(".main_image .block").html(imgDesc).animate({ opacity: 0.85,	marginBottom: "0" }, 250 ); //swap the html of the block, then pull the block container back up and set opacity
			$(".main_image img").attr({ src: imgTitle , alt: imgAlt}); //Switch the main image (URL + alt tag)
		});
	}
	//Show active list-item
	$(".image_thumb ul li").removeClass('active'); //Remove class of 'active' on all list-items
	$(this).addClass('active');  //Add class of 'active' on the selected list
	return false; 

}) .hover(function(){ //Hover effects on list-item 
	$(this).addClass('hover'); //Add class "hover" on hover 
	}, function() {
	$(this).removeClass('hover'); //Remove class "hover" on hover out
});

$("a.collapse").click(function(){
	$(".main_banner .block").slideToggle(); //Toggle the description (slide up and down)
	$("a.collapse").toggleClass("show"); //Toggle the class name of "show" (the hide/show tab)
});

Voir la démo
Gardez à l’esprit ces jQuery moteur à rotation de l’image ne se dégradent pas dans le meilleur mode. Si le javascript est désactivé, chaque vignette doit être cliqué sur le bouton pour obtenir l’image agrandie.
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