本文實例講述了javascript實現列表滾動的方法。分享給大家供大家參考。具體如下：
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>圖片列表滾動</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(); }); $('.right_btn').click(function(){ test.stop(); test.right(); test.autoplay(); });})();</script></html>scroll_img.js如下：
function scroll_img(target,distance,show_width,li_width,mr){ this.distance=distance; //每次移動距離 this.target=$("#"+target); this.show_width=show_width; //顯示區域寬度 this.li_width=li_width; //items寬度 this.mr=mr; //items間距 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'); //初始動作 t.autoplay(); t.scrollbar.mouseover(function(){t.stop();}); //鼠標移到圖片上停止自動播放 t.scrollbar.mouseout(function(){t.autoplay();}); //鼠標移出圖片開始自動播放 }, 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,"宋體";}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%;的作用主要是改變它默認的大小，繼承父體的字體大小*/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;}/*主體css*/.scroll_img_wrap{width:612px;margin: 10px auto;} #scroll_img{width:590px;overflow:hidden;float:left;*position:relative;border: 1px #ccc solid;}/*可視區域寬度*/ .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;}希望本文所述對大家的javascript程序設計有所幫助。
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