Jquery 类网页微信二维码图块滚动效果

首先是自己定制的脚本方法属性代码：

/* * 创建浮动图片广告（Generate a dock AD image） * * USAGE:  *$(selector).higo_plugins_ad({ *src:null,                    // 广告图片路径 *closeSrc:null,               // 关闭图片路径 *href:"#",                    // 广告图片链接地址 *autoHide:true,               // 是否自动隐藏 *hideSecond:10,               // 延迟隐藏秒数 *top:20,                      // 距离顶部偏移高度 *layout:"left",               // 默认图片位置：left 居左 ,right 居右, center 居中,  *width:100,                   // 宽度 *height:100,                  // 高度 *opacity:0.5             // 透明度opacity:0.5(firefox), filter:alpha(opacity=50)(IE) *setPosition:function(left, top){ // 预留自定义显示位置的方法（尚未实现） *return; *} *}) */

其次是详细效果实现：

(function($){$.fn.ad = function(options){var lastScrollY= 0;var czd = $(this);var settings = $.extend({src:null,                    closeSrc:null,               href:"#",autoHide:true,               hideSecond:10,position: "top",             top:20,    bottom:20,                  layout:"left",               width:100,                   height:100,                  opacity:0.5,setPosition:function(left, top){return;}},options || {});if(settings.src && settings.closeSrc){var imgEl = "<a href='" + settings.href + "' target='_blank'><img border=0 width='" + settings.width + "px' height='" + settings.height + "px' src='" + settings.src + "'/> <br></a>";var closeImgEl = "<a href=\"#\"; onclick=\"this.parentElement.style.visibility='hidden'\"><img border=0 src='" + settings.closeSrc +"'/></a>";$(this).append(imgEl + closeImgEl);$(this).css("position","absolute");if(settings.position=='top'){$(this).css("top",settings.top + "px");} else {$(this).css("bottom",settings.bottom + "px");}$(this).css("opacity",settings.opacity);$(this).css("filter","alpha(opacity=" + parseInt(settings.opacity * 100)  + ")");switch(settings.layout) {case "left":$(this).css("left","-100px");break;case "right":$(this).css("right","-100px");break;case "center":var left = (parseInt(window.screen.availWidth) - parseInt(settings.width))/2 + "px";$(this).css("left",left);break;default:$(this).css("left","-100px");break;}} else {return;}if(settings.autoHide) {setTimeout("(function(){$('" + $(this).selector +  "').hide();})();",parseInt(settings.hideSecond) * 1000;}//别名不同导致事件驱动不一样：scroll与onscroll$(window).bind("scroll", function(){var diffY;if (document.documentElement && document.documentElement.scrollTop)diffY = document.documentElement.scrollTop;else if (document.body)diffY = document.body.scrollTopelse {/*Netscape stuff*/}percent= 1 * (diffY - lastScrollY);if(percent>0)percent=Math.ceil(percent);else percent=Math.floor(percent);if(settings.position=='top'){var top = czd.css("top");czd.css("top", parseInt(top) + percent + "px");lastScrollY += percent;} else {var top = czd.css("bottom");czd.css("bottom", parseInt(top) - percent + "px");lastScrollY += percent;}});}})(jQuery);

最后就是页面的编写：

一、导入自己定义的JQuery并配好head

<decorator:head /><script type="text/javascript" src="<%=basePath%>js/jquery.czd_plugins_ad.js"></script><script language="javascript">$(document).ready(function(){    $("#leftbelow").ad({    src:"<%=basePath%>/images/qrcode.png",                      closeSrc:"<%=basePath%>/images/closeAd.gif",           autoHide:false,                   hideSecond:5,                   top:480,     layout:"left",                   width:100,                       height:100,                     opacity:5    });        $("#left").ad({        src:"<%=basePath%>/images/longtentianxia20131010.jpg",                            closeSrc:"<%=basePath%>/images/closeAd.gif",                       href:"......",                            autoHide:false,                       hideSecond:5,                       top:-70,                              layout:"left",                       width:100,                           height:500 ,                       opacity:5     });    $("#right").ad({        src:"<%=basePath%>/images/yingxiaodasai201203012.jpg",                          closeSrc:"<%=basePath%>/images/closeAd.gif",               href:"......",                            autoHide:false,                       hideSecond:5,                       top:-70,                              layout:"right",                       width:100,                           height:500,                         opacity:5    });    });</script>

二、写上主体body代码

<body class="homeBackgroup">          <div id="center"> </div>   <%@include file="/page/public/sideBar.jsp"%>  <div class="shadow">     <div id="container"><div id="header"><%@include file="/page/public/top.jsp"%></div><div id="mainContent">                    <div id="left"></div>                    <decorator:body />                            <div id="right"></div>              <div id="leftbelow"></div>              </div><div id="footer" ><%@include file="/page/public/bottom.jsp"%></div><div id="back-top">    <a href="#top"><span></span></a></div></div>  </div></body>