本文实例讲述了javascript实现列表滚动的方法。分享给大家供大家参考。具体如下:
index.html如下:
<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\"> <html> <head> <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /> <meta name=\"keywords\" content=\"\" /> <meta name=\"description\" content=\"\" /> <link rel=\"stylesheet\" type=\"text/css\" href=\"css/global.css\" /> <script type=\"text/javascript\" src=\"js/jquery-1.7.min.js\"></script> <script type=\"text/javascript\" src=\"js/scroll_img.js\"></script> <title>图片列表滚动</title> </head> <body> <div class=\"scroll_img_wrap clearfix\"> <p class=\"left_btn\"><a href=\"javascript:void(0)\"><img src=\"images/btn.jpg\" /></a></p> <div id=\"scroll_img\"> <ul class=\"scroll_img_list clearfix\"> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information1</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information2</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information3</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information4</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/2.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information5</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/2.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information6</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/2.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information7</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/2.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information8</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information9</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information10</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information11</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information12</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information13</a></p> </li> <li> <p><a href=\"#\"><img src=\"images/1.jpg\" alt=\"#\" /></a></p> <p><a href=\"#\">information14</a></p> </li> </ul> </div> <p class=\"right_btn\"><a href=\"javascript:void(0)\"><img src=\"images/btn.jpg\" /></a></p> </div> </body> <script type=\"text/javascript\"> (function(){ var test=new scroll_img(\'scroll_img\',150,590,140,10); test.initialize(); $(\'.left_btn\').click(function(){ test.stop(); test.left(); test.autoplay(); }); $(\'.right_btn\').click(function(){ test.stop(); test.right(); test.autoplay(); }); })(); </script> </html>
scroll_img.js如下:
function scroll_img(target,distance,show_width,li_width,mr){ this.distance=distance; //每次移动距离 this.target=$(\"#\"+target); this.show_width=show_width; //显示区域宽度 this.li_width=li_width; //items宽度 this.mr=mr; //items间距 this.scrollbar=$(\"#\"+target).find(\'ul\'); this.position=0; this.direction=1; } scroll_img.prototype={ version:1.00, author:\"yangfeifei\", date:2011-11-21, initialize:function(){ var t=this; t.scrollbar.css(\'position\',\'relative\'); //初始动作 t.autoplay(); t.scrollbar.mouseover(function(){t.stop();}); //鼠标移到图片上停止自动播放 t.scrollbar.mouseout(function(){t.autoplay();}); //鼠标移出图片开始自动播放 }, right:function(){ var t=this; (-t.position)<t.total_length()?t.position-=t.distance:t.position=t.position; if((-t.position)<t.total_length()){ t.scrollbar.animate({left:t.position},500); t.direction=1; } if((-t.position)==t.total_length()){ t.scrollbar.animate({left:t.position},500); t.direction=-1; } }, left:function(){ var t=this; (-t.position)>0?t.position+=t.distance:t.position=t.position; if((-t.position)>0){ t.scrollbar.animate({left:t.position},500); t.direction=-1; } if((-t.position)==0){ t.scrollbar.animate({left:t.position},500); t.direction=1; } }, total_length:function(){ var t=this, total_num=t.scrollbar.find(\'li\').length; return total_num*(t.li_width+t.mr)-(t.mr+t.show_width); }, autoplay:function(){ var t=this; t.setInt=setInterval(function(){ t.direction==1?t.right():t.left(); },3000); }, stop:function(){ var t=this; clearInterval(t.setInt); } }
global.css如下:
/*CSS reset*/ body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td{margin:0;padding:0;font-family:arial,\"宋体\";} table{border-collapse:collapse;border-spacing:0;} fieldset,img{border:0;} address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:bold;} ol,ul{list-style-type:none;} caption,th{text-align:left;} h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}/*font-size:100%;的作用主要是改变它默认的大小,继承父体的字体大小*/ q:before,q:after{content:\' \';} abbr,acronym{border:0;} .cb{clear:both;} .cl{clear:left;} .cr{clear:right;} .clearfix:after{content:\".\";display:block;height:0;clear:both;visibility:hidden;} .clearfix{display:inline-block;} * html .clearfix{height:1%;} .clearfix{display:block;} /*主体css*/ .scroll_img_wrap{width:612px;margin: 10px auto;} #scroll_img{width:590px;overflow:hidden;float:left;*position:relative;border: 1px #ccc solid;}/*可视区域宽度*/ .scroll_img_list{width:9999px;} .scroll_img_list li{float:left;width:140px;margin-right:10px;}/*items*/ .scroll_img_list li p{text-align:center;} .scroll_img_list li p a{text-decoration:none;color:#666;} .left_btn,.right_btn{float:left;}
希望本文所述对大家的javascript程序设计有所帮助。
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