JS鼠标拖动翻页切换

发表日期：2016-03-28 文章编辑：南昌开优网络浏览次数：3993 标签：JS应用
<html>
<head>
<title>JS鼠标拖动翻页切换代码 - 开优网络</title>
<style type="text/css">
html,body{width:100%;height:100%;border:0px;margin:0px;overflow:hidden;}
#menu{width:1000px;height:500px;overflow:hidden;background:lightblue;}
.page{position:absolute;width:300px;height:400px;left:350px;top:50px;background:#FFF;border:1px solid #999;}
ul{list-style:none;height:320px;margin:20px;padding:0px;background:#EEE;}
li{font-size:12px;height:20px;line-height:20px;border-bottom:1px dashed #999;}
li span{float:right;}
li a{color:#000;text-decoration:none;}
li a:hover{text-decoration:underline;}
.tip{display:block;height:20px;margin:0px 20px;line-height:20px;text-align:center;font-size:12px;background:#999;}
</style>
</head>
<body>
<script type="text/javascript">
function id(obj){
	return document.getElementById(obj);
}
var page;
var mx;
var md=false;
var sh=0;
var en=false;
window.onload=function(){
	page=id("menu").getElementsByTagName("div");
	if(page.length>0){
		page[0].style.zIndex=2;
	}
	for(i=0;i<page.length;i++){
		page[i].innerHTML+="<span class=\"tip\">"+(i+1)+"/"+page.length+"页 拖拽翻页</span>";
		page[i].id="page"+i;
		page[i].i=i;
		page[i].onmousedown=function(e){
			if(!en){
				if(!e){e=e||window.event;}
				ex=e.pageX?e.pageX:e.x;
				mx=350-ex;
				this.style.cursor="move";
				md=true;
				if(document.all){
					this.setCapture();
				}else{
					window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);
				}
			}
		}
		page[i].onmousemove=function(e){
			if(md){
				en=true;
				if(!e){e=e||window.event;}
				ex=e.pageX?e.pageX:e.x;
				this.style.left=ex+mx+"px";
				if(this.offsetLeft<350){
					var cu=(this.i==0)?page.length-1:this.i-1;
					page[sh].style.zIndex=0;
					page[cu].style.zIndex=1;
					this.style.zIndex=2;
					sh=cu;
				}
				if(this.offsetLeft>350){
					var cu=(this.i==page.length-1)?0:this.i+1;
					page[sh].style.zIndex=0;
					page[cu].style.zIndex=1;
					this.style.zIndex=2;
					sh=cu;
				}
			}
		}
		page[i].onmouseup=function(){
			this.style.cursor="default";
			md=false;
			if(this.offsetLeft==350){
				en=false;
			}
			if(document.all){
				this.releaseCapture();
			}else{
				window.releaseEvents(Event.MOUSEMOVE|Event.MOUSEUP);
			}
			flyout(this);
		}
	}
}
function flyout(obj){
	if(obj.offsetLeft < 350){
		if( (obj.offsetLeft - 10) > 50 ){
			obj.style.left=obj.offsetLeft - 10 + "px";
			window.setTimeout("flyout(id('"+obj.id+"'));",0);
		}else{
			obj.style.left= 50 +"px";
			obj.style.zIndex=0;
			flyin(id(obj.id));
		}
	}
	if(obj.offsetLeft > 350){
		if((obj.offsetLeft + 10) < 650){
			obj.style.left=obj.offsetLeft + 10 + "px";
			window.setTimeout("flyout(id('"+obj.id+"'));",0);
		}else{
			obj.style.left= 650 + "px";
			obj.style.zIndex=0;
			flyin(id(obj.id));
		}
	}
}
function flyin(obj){
	if(obj.offsetLeft<350){
		if((obj.offsetLeft + 10) < 350){
			obj.style.left=obj.offsetLeft + 10+"px";
			window.setTimeout("flyin(id('"+obj.id+"'));",0);
		}else{
			obj.style.left= 350 +"px";
			en=false;
		}
	}
	if(obj.offsetLeft>350){
		if((obj.offsetLeft - 10) > 350){
			obj.style.left=obj.offsetLeft - 10 +"px";
			window.setTimeout("flyin(id('"+obj.id+"'));",0);
		}else{
			obj.style.left=350+"px";
			en=false;
		}
	}
}
</script>
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