JavaScript实现滚动栏效果的方法

(编辑：jimmy 日期: 2024/10/15 浏览：3 次 )

本文实例讲述了JavaScript实现滚动栏效果的方法。分享给大家供大家参考。具体如下：

<!DOCTYPE html> 
<html> 
<head lang="en"> 
 <meta charset="UTF-8"> 
 <title></title> 
 <style> 
  * { 
   margin: 0; 
   padding: 0; 
  } 
  #div1 ul{ 
   position: absolute; 
   left: 0px; 
   top: 0px; 
  } 
  #div1 ul li img { 
   width: 187px; 
   height: 125px; 
  } 
  #div1 ul li{ 
   float: left; 
   width: 187px; 
   height: 125px; 
   list-style: none; 
  } 
  #div1{ 
   width: 748px; 
   height: 125px; 
   position: relative; 
   background-color: chartreuse; 
   overflow: hidden; 
   float: left; 
  } 
  #body{ 
   width: 948px; 
   height: 125px; 
   margin: 100px auto; 
 
  } 
  #body #leftDiv{ 
   float: left; 
   width: 100px; 
   height: 100px; 
  } 
  #body #rightDiv{ 
   float: left; 
   width: 100px; 
   height: 100px; 
  } 
   
  #body #leftDiv button{ 
   background-image: url("image/left.PNG"); 
   width: 100px; 
   height: 100px; 
  } 
  #body #leftDiv button img{ 
   width: 100px; 
   height: 100px; 
  } 
  #body #rightDiv button img{ 
   width: 100px; 
   height: 100px; 
  } 
 </style> 
 <script> 
  window.onload=function(){ 
   var oDiv=document.getElementById('div1'); 
   var oUl=oDiv.getElementsByTagName('ul')[0]; 
   var oLi=oUl.getElementsByTagName('li'); 
   var oLeft=document.getElementById('leftDiv'); 
   var oright=document.getElementById('rightDiv'); 
   oUl.innerHTML+=oUl.innerHTML; 
   oUl.style.width=oLi[0].offsetWidth*oLi.length+'px'; 
   var speed=-2; 
   function move(){ 
    if (oUl.offsetLeft<-oUl.offsetWidth/2){ 
     oUl.style.left='0'; 
    }else if(oUl.offsetLeft>0){ 
     oUl.style.left=-oUl.offsetWidth/2+'px'; 
    } 
    oUl.style.left=oUl.offsetLeft+speed+'px'; 
   }; 
   var timer=setInterval(move,30); 
   oLeft.onclick=function(){ 
    speed=-2; 
   }; 
   oright.onclick= function () { 
    speed=2; 
   }; 
   oUl.onmouseover=function(){ 
    clearInterval(timer); 
   }; 
   oUl.onmouseout=function(){ 
    timer=setInterval(move,30); 
   }; 
  } 
 </script> 
</head> 
<body> 
<div id="body"> 
 <div id="leftDiv"><button><img src="/UploadFiles/2021-04-02/left.PNG">

希望本文所述对大家的javascript程序设计有所帮助。

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