js制作无缝向上滚动的广告

浏览数：33 / 时间：2015年06月09日

---------------------------------------------------------------------------------------------------------------css

@charset "gb2312";
/* CSS Document */

body{
margin:0;
margin-top:3px;
padding:0;
font-size:12px;
line-height:20px;
color:#333;
}
.domes{
overflow:hidden;
border:solid 1px #666;
width:220px;
margin-left:auto;
margin-right:auto;
}
.dome_top{
background-color:#E7C89E;
font-size:14px;
font-weight:bold;
line-height:30px;
padding-left:10px;
height:28px;
color:#810B07;
border:solid 1px #FFF;
}
#dome{
overflow:hidden; /*溢出的部分不显示*/
height:180px;
padding:5px;
}
#dome img{
width:60px;
margin-top:5px;
margin-right:5px;
}
.title{
font-size:14px;
color:#0051A2;
font-weight:bold;
}
.price{
color:#BB3D00;
font-size:18px;
font-weight:bold;
line-height:35px;
}
.main{
width:95%;
margin-left:auto;
margin-right:auto;
}
.left_indent{
padding-left:20px;
}
.red{
color:#F00;
}

---------------------------------------------------------------------------------------------------------------js

// JavaScript Document
function $(element){
return document.getElementById(element);
}

var dome=$("dome");
var dome1=$("dome1");
var dome2=$("dome2");
var speed=50; //设置向上滚动速度
dome2.innerHTML=dome1.innerHTML //复制dome1为dome2
function moveTop(){
if(dome2.offsetTop-dome.scrollTop<=0) //当滚动至dome1与dome2交界时
dome.scrollTop-=dome1.offsetHeight //dome跳到最顶端
else{
dome.scrollTop++;
}
}
var MyMar=setInterval(moveTop,speed) //设置定时器
dome.onmouseover=function() {clearInterval(MyMar)}//鼠标移上时清除定时器达到滚动停止的目的
dome.onmouseout=function() {MyMar=setInterval(moveTop,speed)}//鼠标移开时重设定时器，继续滚动*/

---------------------------------------------------------------------------------------------------------------网页代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>循环向上滚动的文字</title>
<link href="css/scrollTop.css" rel="stylesheet" type="text/css" />
</head>

<body>

<div class="domes">
<div class="dome_top">近7日畅销榜</div>
<div id="dome">
<div id="dome1">
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><img src="images/scrollTop_1.jpg" alt="scroll" /></td>
<td><div class="title">社交疯狂项语</div>
<font class="price">￥57.00</font> 折扣：52折</td>
</tr>
<tr>
<td><img src="images/scrollTop_2.jpg" alt="scroll" /> </td>
<td><div class="title">傲慢与偏见</div>
<font class="price">￥20.00</font> 折扣：25折</td>
</tr>
<tr>
<td><img src="images/scrollTop_3.jpg" alt="scroll" /></td>
<td><div class="title">玻璃鞋全集（50集34VCD）</div>
主演：金贤珠金芝荷
<font class="price">￥300.00</font> 折扣：52折</td>
</tr>
<tr>
<td><img src="images/scrollTop_4.jpg" alt="scroll" /></td>
<td><div class="title">澳大利亚：假日之旅</div>
<font class="price">￥53.00</font> 折扣：51折</td>
</tr>
<tr>
<td><img src="images/scrollTop_5.jpg" alt="scroll" /> </td>
<td><div class="title">浪漫地中海：假日之旅</div>
<font class="price">¥80.00</font> 折扣：52折</td>
</tr>
<tr>
<td><img src="images/scrollTop_6.jpg" alt="scroll" /></td>
<td><div class="title">老人与海</div>
<font class="price">¥57.00</font> 折扣：52折</td>
</tr>
<tr>
<td><img src="images/scrollTop_7.jpg" alt="scroll" /></td>
<td><div class="title">欧陆风情：假日之旅</div>
<font class="price">¥53.00</font> 折扣：52折</td>
</tr>
</table>
</div>
<div id="dome2"></div>
</div>
</div>
<script src="js/scrollTop.js" type="text/javascript"></script>
</body>
</html>