JQ 简洁的轮播图

<div class="ppt">
    <a href="###"><img src="ppt/ppt1.jpg" /></a>
    <a href="###" style="display:none;"><img src="ppt/ppt2.jpg" /></a>
    <a href="###" style="display:none;"><img src="ppt/ppt3.jpg" /></a>
    <a href="###" style="display:none;"><img src="ppt/ppt4.jpg" /></a>
    <div class="pptNum">
        <span class="normal">4</span>
        <span class="normal">3</span>
        <span class="normal">2</span>
        <span class="cur">1</span>
    </div>
</div>

 

/*幻灯片*/
.ppt{ width:270px; height:330px; border:1px solid #ccc; position:relative;}
.ppt img{ position: absolute; top:10px; left:7px; width:255px; height:310px; overflow:hidden;}
.pptNum{ position: absolute; height: 13px; line-height: 14px; bottom:12px; right: 10px; }
.pptNum span{ font-size: 12px; font-weight: 400; color: #FFF; float: right; display: block; width: 24px; text-align: center; background: #000; border-left: solid 1px #FFF; cursor: pointer; }
.pptNum .normal{ color: #FFF; background: #000; filter: Alpha(opacity=50); opacity: .5; }
.pptNum .cur{ background: #ce0609; color: #FFF; }

 

; (function ($) {
    $.fn.extend({
        "ppting": function (t) {
			var num = 4; //共多少张要轮播的
            var $this = $(this), i = 0, $pics = $('.ppt'), autoChange = function () {
                var $currentPic = $pics.find('a:eq(' + (i + 1 === num ? 0 : i + 1) + ')');
                $currentPic.css({
                    display: 'block'
                }).siblings('a').css({
                    display: 'none'
                });
                $pics.find('.pptNum>span:contains(' + (i + 2 > num ? num - i : i + 2) + ')').attr('class', 'cur').siblings('span').attr('class', 'normal');
                i = i + 1 === num ? 0 : i + 1;
            }, st = setInterval(autoChange, t || 2000);
            $this.hover(function () {
                clearInterval(st);
            }, function () { st = setInterval(autoChange, t || 2000) });
            $pics.find('.pptNum>span').click(function () {
                i = parseInt($(this).text(), 10) - 2;
                autoChange();
            });
        }
    });
}(jQuery));

$('.ppt').ppting(1000);

 

调用JQ：

<script type="text/javascript" src="js/jquery-1.10.1.min.js"></script>
<script type="text/javascript" src="js/ppt.js"></script>

 

效果图：