Slideshow using jquery

Tagged with: Jquery

Just a simple slideshow using jquery

<div id="slideshow">
    <img src="img/img1.jpg" alt="" class="active" />
    <img src="img/img2.jpg" alt="" />
    <img src="img/img3.jpg" alt="" />
</div>

Now let’s use CSS to position the images on top of each other and bring the active image to the top level with z-index:

#slideshow {
    position:relative;
    height:350px;
}

#slideshow IMG {
    position:absolute;
    top:0;
    left:0;
    z-index:8;
}

#slideshow IMG.active {
    z-index:10;
}

#slideshow IMG.last-active {
    z-index:9;
}

The main javascript code


function slideSwitch() {
    var $active = $('#slideshow IMG.active');

    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

    var $next =  $active.next().length ? $active.next()
        : $('#slideshow IMG:first');

    $active.addClass('last-active');

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}

$(function() {
    setInterval( "slideSwitch()", 5000 );
});
The complete code
<script type="text/javascript" src="jquery-1.2.6.min.js"></script>

<script type="text/javascript">

function slideSwitch() {
    var $active = $('#slideshow IMG.active');

    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next()
        : $('#slideshow IMG:first');

    // uncomment the 3 lines below to pull the images in random order

    // var $sibs  = $active.siblings();
    // var rndNum = Math.floor(Math.random() * $sibs.length );
    // var $next  = $( $sibs[ rndNum ] );

    $active.addClass('last-active');

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}

$(function() {
    setInterval( "slideSwitch()", 5000 );
});

</script>

<style type="text/css">

/*** set the width and height to match your images **/

#slideshow {
    position:relative;
    height:350px;
}

#slideshow IMG {
    position:absolute;
    top:0;
    left:0;
    z-index:8;
    opacity:0.0;
}

#slideshow IMG.active {
    z-index:10;
    opacity:1.0;
}

#slideshow IMG.last-active {
    z-index:9;
}

</style>

</head>

<body style="font-family: Arial, Sans-serif, sans;">

<!-- this will work with any number of images -->
<!-- set the active class on whichever image you want to show up as the default
(otherwise this will be the last image) -->

<div id="slideshow">
    <img src="image1.jpg" alt="Slideshow Image 1"  />
    <img src="image2.jpg" alt="Slideshow Image 2" class="active" />
    <img src="image3.jpg" alt="Slideshow Image 3" />
    <img src="image4.jpg" alt="Slideshow Image 4" />
    <img src="image5.jpg" alt="Slideshow Image 5" />
</div> 
Note you can get the JS file from http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.js 
and rename