jQuery图片无缝滚动

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<title>jquery图片无缝滚动js代码ul./li结构，可重用 - 懒人建站</title>
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<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script>
//滚动
(function($){

    $.fn.kxbdMarquee = function(options){
        var opts = $.extend({},$.fn.kxbdMarquee.defaults, options);
        
        return this.each(function(){
            var $marquee = $(this);//滚动元素容器
            var _scrollObj = $marquee.get(0);//滚动元素容器DOM
            var scrollW = $marquee.width();//滚动元素容器的宽度
            var scrollH = $marquee.height();//滚动元素容器的高度
            var $element = $marquee.children(); //滚动元素
            var $kids = $element.children();//滚动子元素
            var scrollSize=0;//滚动元素尺寸
            var _type = (opts.direction == 'left' || opts.direction == 'right') ? 1:0;//滚动类型，1左右，0上下

            //防止滚动子元素比滚动元素宽而取不到实际滚动子元素宽度
            $element.css(_type?'width':'height',10000);
            //获取滚动元素的尺寸
            if (opts.isEqual) {
                scrollSize = $kids[_type?'outerWidth':'outerHeight']() * $kids.length;
            }else{
                $kids.each(function(){
                    scrollSize += $(this)[_type?'outerWidth':'outerHeight']();
                });
            }
            //滚动元素总尺寸小于容器尺寸，不滚动
            if (scrollSize<(_type?scrollW:scrollH)){scrollSize=scrollW*2;}  
            //克隆滚动子元素将其插入到滚动元素后，并设定滚动元素宽度
            $element.append($kids.clone()).css(_type?'width':'height',scrollSize*2);
            
            var numMoved = 0;
            function scrollFunc(){
                var _dir = (opts.direction == 'left' || opts.direction == 'right') ? 'scrollLeft':'scrollTop';
                if (opts.loop > 0) {
                    numMoved+=opts.scrollAmount;
                    if(numMoved>scrollSize*opts.loop){
                        _scrollObj[_dir] = 0;
                        return clearInterval(moveId);
                    } 
                }
                if(opts.direction == 'left' || opts.direction == 'up'){
                    var newPos = _scrollObj[_dir] + opts.scrollAmount;
                    if(newPos>=scrollSize){
                        newPos -= scrollSize;
                    }
                    _scrollObj[_dir] = newPos;
                }else{
                    var newPos = _scrollObj[_dir] - opts.scrollAmount;
                    if(newPos<=0){
                        newPos += scrollSize;
                    }
                    _scrollObj[_dir] = newPos;
                }
            };
            //滚动开始
            var moveId = setInterval(scrollFunc, opts.scrollDelay);
            //鼠标划过停止滚动
            $marquee.hover(
                function(){
                    clearInterval(moveId);
                },
                function(){
                    clearInterval(moveId);
                    moveId = setInterval(scrollFunc, opts.scrollDelay);
                }
            );
            
            //控制加速运动
            if(opts.controlBtn){
                $.each(opts.controlBtn, function(i,val){
                    $(val).bind(opts.eventA,function(){
                        opts.direction = i;
                        opts.oldAmount = opts.scrollAmount;
                        opts.scrollAmount = opts.newAmount;
                    }).bind(opts.eventB,function(){
                        opts.scrollAmount = opts.oldAmount;
                    });
                });
            }
        });
    };
    $.fn.kxbdMarquee.defaults = {
        isEqual:true,//所有滚动的元素长宽是否相等,true,false
        loop: 0,//循环滚动次数，0时无限
        direction: 'left',//滚动方向，'left','right','up','down'
        scrollAmount:1,//步长
        scrollDelay:40,//时长
        newAmount:3,//加速滚动的步长
        eventA:'mousedown',//鼠标事件，加速
        eventB:'mouseup'//鼠标事件，原速
    };
    
    $.fn.kxbdMarquee.setDefaults = function(settings) {
        $.extend( $.fn.kxbdMarquee.defaults, settings );
    };
    
})(jQuery);

</script>
<style>
a{ font-size:13px; color:#333333; text-decoration:none;}
a:hover{color:red; text-decoration:underline;}
img{ border:none;}

.marquee {width:560px;height:260px;overflow:hidden;border:1px solid #333; margin-top:20px;}
.marquee li{ display:inline; float:left; margin-right:12px;}
.marquee li a{ width:230px; height:260px; display:block; float:left; text-align:center; font-size:14px;}
.marquee li a:hove{ text-decoration:none;}
.marquee li img {width:160px; height:160px;}
.marquee li em{font-style: normal; height:24px; line-height:24px; display:block; margin-top:8px;}
</style>
</head>

<body>
<script type="text/javascript">
$(document).ready(function(){
    $('.marquee').kxbdMarquee({
            direction:'left',
            eventA:'mouseenter',
            eventB:'mouseleave'
    });
});
</script> 
            
<div class="marquee"> 
    <ul>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
    </ul>
</div> 
<div class="marquee"> 
    <ul>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a><em>google 404</em></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
    </ul>
</div> 
<div class="marquee"> 
    <ul>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
        <li> <a href="#"><img src="http://www.google.com/images/errors/robot.png" alt="google 404" /></a></li>
    </ul>
</div> 

<p>jquery图片无缝滚动js代码ul./li结构，可重用。</p>




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posted @ 2013-10-29 16:16 崇婧阅读(855) 评论(0) 编辑收藏举报
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jQuery图片无缝滚动

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