js代码实现鼠标完美拖拽翻页特效

2016-12-16 网页编程网 网页编程网

<html>
<head>
<meta http-equiv=content-type content="text/html; charset=utf-8">
<title>非常酷的鼠标拖拽翻页效果</title>
<style>
body{
 border:0px;
 margin:0px;
 overflow:hidden;
 background-color:transparent;
 font-family:宋体;
}
.page{
 position:absolute;
 width:700px;
 border:1px solid #999;
 background-color:#000;
 left:425px;
 margin-left:-350px;
 cursor:default;
 z-index:0;
}
ul{
 height:320px;
 list-style:none;
 margin:40px 50px 0px;
 padding:0px;
}
li{
 width:100%;
 height:30px;
 line-height:30px;
 font-size:14px;
 text-align:left;
 border-bottom:1px dashed #999;
}
a{
 text-decoration:none;
 color:#999;
}
a:hover{
 font-weight:bold;
}
li span{
 float:right;
 color:#999;
}
.tip{
 display:block;
 width:100%;
 font-size:12px;
 color:#999;
 text-align:center;
 margin:10px 0px 20px;
}
</style>
</head>
<body onselectstart="return false;">
<script>
function id(obj){
 return document.getElementById(obj);
}
var page;
var lm,mx;
var md=false;
var sh=0;
var en=false;
window.onload=function(){
 page=document.getElementsByTagName("div");
 if(page.length>0){
 page[0].style.zIndex=2;
 }
 for(i=0;i<page.length;i++){
 page[i].className="page";
 page[i].innerHTML+="第 "+(i+1)+"/"+page.length+" 页 提示：左右拖拽翻页";
 page[i].id="page"+i;
 page[i].i=i;
 page[i].onmousedown=function(e){
 if(!en){
 if(!e){e=e||window.event;}
 lm=this.offsetLeft;
 mx=(e.pageX)?e.pageX:e.x;
 this.style.cursor="w-resize";
 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;}
 var ex=(e.pageX)?e.pageX:e.x;
 this.style.left=ex-(mx-lm)+350;
 if(this.offsetLeft<75){
 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>75){
 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(document.all){
 this.releaseCapture();
 }else{
 window.releaseEvents(Event.MOUSEMOVE|Event.MOUSEUP);
 }
 flyout(this);
 }
 }
}
function flyout(obj){
 if(obj.offsetLeft<75){
 if( (obj.offsetLeft + 350 - 20) > -275 ){
 obj.style.left=obj.offsetLeft + 350 - 20;
 window.setTimeout("flyout(id('"+obj.id+"'));",0);
 }else{
 obj.style.left=-275;
 obj.style.zIndex=0;
 flyin(id(obj.id));
 }
 }
 if(obj.offsetLeft>75){
 if( (obj.offsetLeft + 350 + 20) < 1125 ){
 obj.style.left=obj.offsetLeft + 350 + 20;
 window.setTimeout("flyout(id('"+obj.id+"'));",0);
 }else{
 obj.style.left=1125;
 obj.style.zIndex=0;
 flyin(id(obj.id));
 }
 }
}
function flyin(obj){
 if(obj.offsetLeft<75){
 if( (obj.offsetLeft + 350 + 20) < 425 ){
 obj.style.left=obj.offsetLeft + 350 + 20;
 window.setTimeout("flyin(id('"+obj.id+"'));",0);
 }else{
 obj.style.left=425;
 en=false;
 }
 }
 if(obj.offsetLeft>75){
 if( (obj.offsetLeft + 350 - 20) > 425 ){
 obj.style.left=obj.offsetLeft + 350 - 20;
 window.setTimeout("flyin(id('"+obj.id+"'));",0);
 }else{
 obj.style.left=425;
 en=false;
 }
 }
}
</script>
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