JS左右无缝滚动（一般方法+面向对象方法）【javascript】

web前端|js教程 JS左右无缝滚动（一般方法+面向对象方法）【javascript】

左右,无缝滚动

web前端-js教程

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JS左右无缝滚动（一般方法+面向对象方法） 
.clearfix:after {content:"."; display:block; height:0; visibility:hidden; clear:both; } 
.clearfix { *zoom:1; } 
body{background:gray;} 
#wrap{width:810px; height:160px; 
border:1px solid black; 
position:relative; 
left:50%; 
top:50%; 
margin-left:-410px; 
margin-top:200px; 
background:#fff; 
overflow:hidden;} 
#wrap ul{margin:0px; 
padding:0px; 
position:absolute; 
top:0px; 
left:0px;} 
#wrap ul li{ list-style:none; float:left;margin:5px 10px;width:265px;} 
#wrap ul li img{ border:1px black solid; padding:10px;} 
 
function Slide(obj,direction,speed){ //面向对象的方法，可以自由控制方向，speed=>3 ie下可以 
this.container=document.getElementById(obj); 
this.content=this.container.getElementsByTagName("ul")[0]; 
this.lis=this.content.getElementsByTagName("li"); 
this.content.innerHTML+=this.content.innerHTML; 
this.content.style.width=(this.lis[0].offsetWidth+20)*this.lis.length+"px"; 
var that=this 
if(direction=="left"){ 
this.speed=-speed 
}else if(direction=="right"){ 
this.speed=speed 
} 
Slide.prototype.scroll=function(){ 
this.content.style.left=this.content.offsetLeft+this.speed+"px"; 
if(this.content.offsetLeft <= -this.content.offsetWidth/2){ 
this.content.style.left ="0px"; 
}else if(this.content.offsetLeft >=0){ 
this.content.style.left = -this.content.offsetWidth/2 + "px"; 
} 
} 
this.time=setInterval(function(){that.scroll()},100); 
this.container.onmouseover=function(){ 
clearInterval(that.time); 
} 
this.container.onmouseout=function(){ 
that.time=setInterval(function(){that.scroll()},100); 
} 
} 
window.onload=function(){new Slide("wrap","left",5)}