日期:2014-05-16  浏览次数:20360 次

复杂些的工具条图标拖动?骨灰级定位专家来看看
<!DOCTYPE   html   PUBLIC   "-//W3C//DTD   XHTML   1.0   Transitional//EN "   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html   xmlns= "http://www.w3.org/1999/xhtml ">
<head>
<title> Tool </title>
<meta   http-equiv= "Content-Type "   content= "text/html;   charset=iso-8859-1 "   />
<style   type= "text/css ">
body   {
margin:   0;
}
</style>
<script   type= "text/javascript ">
var   mX=0;
var   mY=0;
var   flag=0;
var   h=0;
var   w=0;
var   tar=null;

function   myTool(toolname,toolnum,isDefault,parentAppend)
{
this.name     =   toolname;
this.index   =   toolnum;

//tool   img
this.t=document.createElement( 'img ');
this.t.outimg= 'http://www.csdn.net/ui/scripts/Csdn/_resources/FrameMDI/message.gif ';
this.t.overimg= 'http://www.csdn.net/ui/scripts/Csdn/_resources/FrameMDI/post.gif ';
this.t.src=isDefault?this.t.overimg:this.t.outimg;
this.t.num=this.index;
with(this.t.style)
{
border   =   "solid   1px   #AAA ";
margin   =   "0px   5px   5px   0px ";
position= 'relative ';
top=2;
left=2;
}
parentAppend.appendChild(this.t);

//event
this.t.onmousedown=function()
{
flag=1;
h=event.offsetY;
w=event.offsetX;
tar=event.srcElement;
}
this.t.onmousemove=function()
{

}
this.t.onmouseover=function()
{
this.src=this.overimg;
}
this.t.onmouseout=function()
{
this.src=this.outimg;
}
}

function   mousemove()
{
mX=event.clientX;
mY=event.clientY;
if(!flag)return   false;
tar.style.top=mY-h-parseInt(tar.offsetTop)+ 'px ';
tar.style.left=mX-w-parseInt(tar.offsetLeft)+ 'px ';
}

function   mouseup()
{flag=0;}

function   pageinit()
{
var   i=document.getElementById( 'icon ');
new   myTool( 'tool1 ',1,false,i);
new   myTool( 'tool2 ',2,false,i);
new   myTool( 'tool3 ',3,false,i);
new   myTool( 'tool4 ',4,false,i);
}
</script>
</head>
<body   onload= "pageinit(); ">
<div   style= "border:1px   solid   darkred;position:absolute;left:120px;top:120px;text-align:center;background:pink;width:600px;height:400px; "   onmousemove= "mousemove() "   onmouseup= "mouseup() ">
<div   style= "width:128px;height:34px;background:lightblue;border:1px   solid   darkturquoise;position:absolute;top:100px;left:100px; "   id= "icon ">
</div>
</div>
</body>
</html>

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Js如何写定位

让可变换的图片在粉红色区域内随意拖动?

  注:不能更改Css样式,仅通过坐标计算定位

------解决方案--------------------
位置对了,好像还有点问题,目前还不知道怎么处理:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitiona