网页上的几个图层模块可在页面中任意拖动效果，这个图层拖动js特效兼容多种浏览器。
<html>
<head>
<meta http-equiv="content-Type" content="text/html;charset=gb2312">
<meta name="keywords" content="武鸣人网站,武鸣信息网,武鸣本地网,武鸣信息资源平台,减肥,健身,励志,励志语录,js特效,网页特效,www.wuming.ren">
<meta name="description" content="欢迎来到武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢，分享互联网流行的励志语录经典短句，减肥健身健康小常识及打卡记录，收集各种js特效代码。">
<title>仿google图层拖动效果_武鸣人</title>
<style type="text/css">
body
{
margin:10px;
}
#dragHelper
{
position:absolute;/*重要*/
border:2px dashed #000000;
background-color:#FFFFFF;
filter: alpha(opacity=30);
}
.normal
{
position:absolute;/*重要*/
width:300px;
#height:10px;
border:1px solid #666666;
background-color:#FFFFFF;
}
.over
{
position:absolute;/*重要*/
width:300px;
#height:10px;
border:1px solid #666666;
background-color:#f3f3f3;
filter: alpha(opacity=50);
}
.dragArea {
CURSOR: move;
}
</style>
</head>
<!--把<body>改为-->
<body oncontextmenu="window.event.returnValue=false">
<a href="https://www.wuming.ren">武鸣人</a>，各种信息资源免费发布，分享励志语录经典短句，减肥健身常识，各种js特效代码。网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)<hr>
<!--欢迎来到武鸣人信息资源平台，各种信息免费发布，资源共享合作共赢，分享互联网流行的励志语录经典短句，减肥健身健康小常识及打卡记录，收集各种js特效代码。-->
<script type="text/javascript" src="https://www.wuming.ren/ad/tc.js"></script>
<script type="text/javascript" src="https://www.wuming.ren/ad/a.js"></script>
<div id="dragHelper" style="display:none"></div>
<div class="normal" overClass="over" dragClass="normal">
<table width="100%">
<tbody>
<tr bgcolor="#CCCCCC" bar="yes">
<td><a href="https://www.wuming.ren">武鸣人一号</a></td>
<td dragArea="yes" class="dragArea">........</td>
<td><a href="#" onclick="openClose(this)">-</a> x</td>
</tr>
<tr>
<td colspan="3">地址：https://www.wuming.ren</td>
</tr>
<tr>
<td colspan="3">关键字：网页特效、广告代码、武鸣人</td>
</tr>
<tr>
<td colspan="3">说明：武鸣人 www wuming.ren</td>
</tr>
</tbody>
</table>
</div>
<div class="normal" overClass="over" dragClass="normal">
<table width="100%">
<tbody>
<tr bgcolor="#CCCCCC" bar="yes">
<td>武鸣人二号</td>
<td dragArea="yes" class="dragArea">........</td>
<td><a href="#" onclick="openClose(this)">-</a> x</td>
</tr>
<tr>
<td colspan="3">地址：https://www.wuming.ren</td></tr>
<tr>
<td colspan="3">关键字：</td>
</tr>
<tr>
<td colspan="3">说明：武鸣人 www wuming.ren</td>
</tr>
</tbody>
</table>
</div>
<div class="normal" overClass="over" dragClass="normal">
<table width="100%">
<tbody>
<tr bgcolor="#CCCCCC" bar="yes">
<td>武鸣人三号</td>
<td dragArea="yes" class="dragArea">........</td>
<td><a href="#" onclick="openClose(this)">-</a> x</td>
</tr>
<tr>
<td colspan="3">地址：https://www.wuming.ren</td>
</tr>
<tr>
<td colspan="3">关键字：</td>
</tr>
<tr><td colspan="3">说明：武鸣人 www wuming.ren</td>
</tr>
</tbody>
</table>
</div>
<div class="normal" overClass="over" dragClass="normal">
<table width="100%">
<tbody>
<tr bgcolor="#CCCCCC" bar="yes">
<td>武鸣人四号</td>
<td dragArea="yes" class="dragArea">........</td>
<td><a href="#" onclick="openClose(this)">-</a> x</td>
</tr>
<tr>
<td colspan="3">地址：https://www.wuming.ren</td>
</tr>
<tr>
<td colspan="3">关键字：</td>
</tr>
<tr>
<td colspan="3">说明：武鸣人 www wuming.ren</td>
</tr>
</tbody>
</table>
</div>
<script language="javascript">
<!--
var dragObjs = []; //可以拖拽的元素数组
var dragObjTops = [];
var dragHelper = document.getElementById("dragHelper"); //拖拽时位置框
var dragObj = null; //拖拽对象元素
var dragObjPos = 0;
var dragObjOffset = {left:0,top:0}; //拖拽对象原始位置
var mouseInDragObjOffset = {x:0,y:0}; //鼠标在拖拽对象中的相对位置
var initHeight = 40;
Number.prototype.NaN0=function(){return isNaN(this)?0:this;}
function getPosition(e){ //获取元素相对文档的绝对位置
var left = 0;
var top = 0;
while (e.offsetParent){
left += e.offsetLeft;
top += e.offsetTop;
e = e.offsetParent;
}
left += e.offsetLeft;
top += e.offsetTop;
return {x:left, y:top};
}
function mouseCoords(ev){ //获取鼠标相对文档的绝对位置
if(ev.pageX || ev.pageY){
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function getMouseOffset(target, ev){ // 获取鼠标相对元素的相对位置
ev = ev || window.event;
var elementPos = getPosition(target);
var mousePos = mouseCoords(ev);
return {x:mousePos.x - elementPos.x, y:mousePos.y - elementPos.y};
}
function mouseDown(ev){
ev = ev || window.event;
target = ev.srcElement || ev.target;
if(dragObj){
return;
}
var dragArea = false;
if(target.getAttribute("dragArea")){
dragArea = true;
}
while(!target.getAttribute("isDragObj")){
if(target.tagName=="HTML")
break;
target = target.parentNode;
}
if(dragArea && target.getAttribute("isDragObj")){
dragObj = target;
//重写的目的是让当前对象在最上层
document.body.removeChild(dragObj);
document.body.appendChild(dragObj);
//记录下拖拽对象原始位置
dragObjOffset.left = dragObj.style.left;
dragObjOffset.top = dragObj.style.top;
dragObj.className = dragObj.getAttribute("overClass");
//鼠标在拖拽对象中的相对位置
mouseInDragObjOffset = getMouseOffset(dragObj, ev);
dragHelper.style.left = dragObj.style.left;
dragHelper.style.top = dragObj.style.top;
dragHelper.style.width = dragObj.offsetWidth;
dragHelper.style.height = dragObj.offsetHeight;
dragHelper.style.display = "";
//alert(dragObj.offsetWidth+":"+dragObj.clientWidth);
}
}
function mouseUp(ev){
ev = ev || window.event;
target = ev.srcElement || ev.target;
if(dragObj){
dragObj.style.left = dragHelper.style.left;
dragObj.style.top = dragHelper.style.top;
dragHelper.style.display = "none";
dragObj.className = dragObj.getAttribute("dragClass");
dragObj = null;
}
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function mouseMove(ev){
ev = ev || window.event;
if(dragObj) {
var mousePos = mouseCoords(ev);
/*dragHelper.style.left = dragObjOffset.left;
dragHelper.style.top = dragObjOffset.top;
dragHelper.style.width = dragObj.offsetWidth;
dragHelper.style.height = dragObj.offsetHeight;
dragHelper.style.display = "";*/
var windowWidth = document.body.offsetWidth; //窗口宽度
var windowHeight = document.body.offsetHeight; //窗口高度
//拖拽对象应该所在当前位置
var dragObjLeft = mousePos.x - mouseInDragObjOffset.x;
var dragObjTop = mousePos.y - mouseInDragObjOffset.y;
//增加判断，不然拖拽对象拖出浏览器窗口
if(dragObjLeft >= 0 && dragObjLeft <= windowWidth - dragObj.offsetWidth - 20)
dragObj.style.left = dragObjLeft;
if(dragObjTop >=0)
dragObj.style.top = dragObjTop;
repaint();
}
}
//克隆对象
function cloneObject(srcObj, destObj){
destObj = srcObj.cloneNode(true);
}
function makeDraggable(element){
element.setAttribute("isDragObj", "y");
}
function repaint(){
for(i=0; i<dragObjs.length; i++){
if(dragObjs[i] == dragObj){
dragObjPos = i;
dragObjs[i] = dragHelper;
break;
}
}
if(dragObjPos>0 && parseInt(dragObj.style.top)<parseInt(dragObjs[dragObjPos-1].style.top)){
dragObjs[dragObjPos] = dragObjs[dragObjPos-1];
dragObjs[dragObjPos-1] = dragHelper;
dragObjPos = dragObjPos - 1;
}
if(dragObjPos<dragObjs.length-1 && parseInt(dragObj.style.top)>parseInt(dragObjs[dragObjPos+1].style.top)){
dragObjs[dragObjPos] = dragObjs[dragObjPos+1];
dragObjs[dragObjPos+1] = dragHelper;
dragObjPos = dragObjPos + 1;
}
paintDragObjs();
dragObjs[dragObjPos] = dragObj;
}
function paintDragObjs(){
var h = 40;
for(i=0; i<dragObjs.length; i++){
dragObjs[i].style.left = 20;
dragObjs[i].style.top = h;
h += dragObjs[i].offsetHeight + 10;
}
}
function openClose(obj){
obj.innerHTML = obj.innerHTML=="-"?"+":"-";
while(obj.tagName != "TBODY"){
obj = obj.parentNode;
}
for(i=0; i<obj.childNodes.length; i++){
if(obj.childNodes[i].nodeName == "#text"
|| obj.childNodes[i].getAttribute("bar")){ continue; }
obj.childNodes[i].style.display=obj.childNodes[i].style.display==""?"none":"";
}
paintDragObjs();
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
document.onmousedown = mouseDown;
document.onmouseup = mouseUp;
document.onmousemove = mouseMove;
window.onload = function(){
var objs = document.getElementsByTagName("Div");
for(i=0; i<objs.length; i++){
var item = objs.item(i);
//if(i==1)item.style.height=150;
if(item.getAttribute("overClass")){
makeDraggable(item);
dragObjs.push(item);
item.style.left = 20;
item.style.top = initHeight;
dragObjTops.push(initHeight);
initHeight += item.offsetHeight + 10;
}
}
// dragHelper = document.createElement(朙DIV朙);
// dragHelper.style.cssText = 朙position:absolute;display:none;朙;
// document.body.appendChild(dragHelper);
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
//-->
</script>
</body>
</html>