js实现iGoogleDivDrag模块拖动层拖动特效的方法
本文实例讲述了js实现iGoogleDivDrag模块拖动层拖动特效的方法。分享给大家供大家参考。具体实现方法如下：
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/>
<title>js实现iGoogleDivDrag模块拖动层拖动效果</title>
<styletype="text/css">
*{margin:0px;padding:0px;}
body{position:relative;width:780px;height:800px;border:1pxsolidred}
.drag{width:200px;height:100px;border:1pxsolid#000;margin:20px;background:#fff}
.dragh1{margin:0px;padding:0px;font-size:12px;height:18px;line-height:18px;background:#E0E7F3;text-indent:20px;cursor:move;}
.center{margin:200px;border:3pxsolidred}
</style>
<scripttype="text/javascript"></script>
</head>
<body>
<divclass="drag">
<h1><strong>www.baidu.com</strong></h1>
</div>
<divclass="drag">
<h1>www.163.com</h1>
</div>
<divclass="drag">
<h1><strong>www.nhooo.com</strong></h1>
</div>
<divclass="drag"><h1>测试二</h1></div>
<divclass="drag"><h1>测试三</h1></div>
<divclass="drag"><h1>测试四</h1></div>
<divclass="drag"><h1>测试五</h1></div>
</body>
</html>
<scripttype="text/javascript">
/*
Author :popper.w
Version:v2.0
*/
varDragZindexNumber=0;
functiondrag(obj){
varox,oy,ex,xy,tag=0,mask=0;
if(tag==0){
obj.onmousedown=function(e)
{
if(mask==1){return;}
obj.style.zIndex=DragZindexNumber++;
transp(obj,"start")
tag=1;
vare=e||window.event;
ex=getEventOffset(e).offsetX;
ey=getEventOffset(e).offsetY;
ox=parseInt(obj.offsetLeft);
oy=parseInt(obj.offsetTop);
tempDiv=document.createElement("div");
with(tempDiv.style)
{
width=obj.offsetWidth+"px";
height=obj.offsetHeight+"px";
border="1pxdottedred";
position="absolute";
left=obj.offsetLeft+"px";
top=obj.offsetTop+"px";
zIndex=999;
}
document.body.appendChild(tempDiv);
this.ele=tempDiv;
fDragStart(tempDiv);
document.body.onmousemove=function(e){
if(tag==1)
{
vare=e||window.event;
tempDiv.style.left=parseInt(e.clientX)-ex+"px";
tempDiv.style.top=parseInt(e.clientY)-ey+"px";
}
else{if(!tempDiv==null)tempDiv.parentNode.removeChild(tempDiv)}
}
tempDiv.onmouseup=function(e)
{
vare=e||window.event;
fDragEnd(tempDiv);
obj.style.position="absolute";
movie(obj,parseInt(e.clientX)-ex-19,parseInt(e.clientY)-ey-20);
tempDiv.parentNode.removeChild(tempDiv);
tag=0;
}
}
}
}
functionmovie(o,l,t){
vara=1;
mask=1;
varol=parseInt(o.offsetLeft);
varot=parseInt(o.offsetTop);
variTimer=setInterval(function(){
if(a==10)
{
transp(o,"end");
mask=0;
clearInterval(iTimer);
}
o.style.left=ol+a*(l-ol)/10+"px";
o.style.top=ot+a*(t-ot)/10+"px";
a++;
},20);
}
functionfCancleBubble(e)
{
vare=window.event||e;
if(e.preventDefault)e.preventDefault();
elsee.returnValue=false;
}
functiontransp(o,mode){
if(mode=="start"){
if(document.all){
o.style.filter="Alpha(Opacity=50)";
}else{
o.style.opacity=0.5;
}
}
else{
if(document.all){
o.style.filter="Alpha(Opacity=100)";
}else{
o.style.opacity=1;
}
}
}
functiongetOffset(evt)
{
vartarget=evt.target;
if(target.offsetLeft==undefined)
{
target=target.parentNode;
}
varpageCoord=getPageCoord(target);
vareventCoord=
{
x:window.pageXOffset+evt.clientX,
y:window.pageYOffset+evt.clientY
};
varoffset=
{
offsetX:eventCoord.x-pageCoord.x,
offsetY:eventCoord.y-pageCoord.y
};
returnoffset;
}
functiongetPageCoord(element)
{
varcoord={x:0,y:0};
while(element)
{
coord.x+=element.offsetLeft;
coord.y+=element.offsetTop;
element=element.offsetParent;
}
returncoord;
}
functiongetEventOffset(evt)
{
varmsg="";
if(evt.offsetX==undefined)
{
varevtOffsets=getOffset(evt);
msg={offsetX:evtOffsets.offsetX,offsetY:evtOffsets.offsetY};
}
else
{
msg={offsetX:evt.offsetX,offsetY:evt.offsetY};
}
returnmsg;
}
functionfDragStart(XEle)
{
switch(fCkBrs())
{
case3:
window.getSelection().removeAllRanges();
break;
default:
XEle.setCapture();
break;
}
}
functionfDragEnd(XEle)
{
switch(fCkBrs())
{
case3:
window.getSelection().removeAllRanges();
break;
default:
XEle.releaseCapture();
break;
}
}
functionfCkBrs()
{
switch(navigator.appName)
{
case'Opera':return2;
case'Netscape':return3;
default:return1;
}
}
varelement=document.getElementsByTagName("div");
for(vari=0;i<element.length;i++){
if(element[i].className=="drag"){
drag(element[i])}
}
</script>
希望本文所述对大家的javascript程序设计有所帮助。