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  • js对象拖动

    <SCRIPT LANGUAGE="JavaScript">
    <!--
    var currentMoveObj = null;    //当前拖动对象
    var relLeft;    //鼠标按下位置相对对象位置
    var relTop;
    function f_mdown(obj)
    {
        currentMoveObj 
    = obj;        //当对象被按下时,记录该对象
        currentMoveObj.style.position = "absolute";
        relLeft 
    = event.x - currentMoveObj.style.pixelLeft;
        relTop 
    = event.y - currentMoveObj.style.pixelTop;
    }

    window.document.onmouseup 
    = function()
    {
        currentMoveObj 
    = null;    //当鼠标释放时同时释放拖动对象
    }

    function f_move(obj)
    {
        
    if(currentMoveObj != null)
        
    {
            currentMoveObj.style.pixelLeft
    =event.x-relLeft;
            currentMoveObj.style.pixelTop
    =event.y-relTop;
        }

    }


    //-->
    </SCRIPT>
    <BODY>
    <TABLE width="100" border=1 onselectstart="return false" style="position:absolute;left:50;top:50" onmousedown="f_mdown(this)" onmousemove="f_move(this)">
    <TR>
        
    <TD bgcolor="#CCCCCC" align="center" style="cursor:move">title1</TD>
    </TR>
    <TR>
        
    <TD align="center" height="60">content</TD>
    </TR>
    </TABLE>
    <TABLE width="100" border=1 onselectstart="return false" style="position:absolute;left:350;top:250" onmousedown="f_mdown(this)" onmousemove="f_move(this)">
    <TR>
        
    <TD bgcolor="#CCCCCC" align="center" style="cursor:move">title2</TD>
    </TR>
    <TR>
        
    <TD align="center" height="60">content</TD>
    </TR>
    </TABLE>
    </BODY>
    第二个示例
    <html>
    <head>
    <title>_xWin</title>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    <META NAME="Description" CONTENT="http://www.51windows.Net">
    <style type='text/css'>
    <!--
    body
    {font-size:12px;}
    a:visited
    {text-decoration:none;color:slategray;}
    a:hover
    {text-decoration:underline;color:slategray;}
    a:link
    {text-decoration:none;color:slategray;}
    -->
    </style>
    <script language=JScript>
    <!--
    //可以打包为js文件;
    var x0=0,y0=0,x1=0,y1=0;
    var offx=6,offy=6;
    var moveable=false;
    var hover='orange',normal='#336699';//color;
    var index=10000;//z-index;
    //
    开始拖动;
    function startDrag(obj)
    {
        
    if(event.button==1)
        
    {
            
    //锁定标题栏;
            obj.setCapture();
            
    //定义对象;
            var win = obj.parentNode;
            
    var sha = win.nextSibling;
            
    //记录鼠标和层位置;
            x0 = event.clientX;
            y0 
    = event.clientY;
            x1 
    = parseInt(win.style.left);
            y1 
    = parseInt(win.style.top);
            
    //记录颜色;
            normal = obj.style.backgroundColor;
            
    //改变风格;
            obj.style.backgroundColor = hover;
            win.style.borderColor 
    = hover;
            obj.nextSibling.style.color 
    = hover;
            sha.style.left 
    = x1 + offx;
            sha.style.top  
    = y1 + offy;
            moveable 
    = true;
        }

    }

    //拖动;
    function drag(obj)
    {
        
    if(moveable)
        
    {
            
    var win = obj.parentNode;
            
    var sha = win.nextSibling;
            win.style.left 
    = x1 + event.clientX - x0;
            win.style.top  
    = y1 + event.clientY - y0;
            sha.style.left 
    = parseInt(win.style.left) + offx;
            sha.style.top  
    = parseInt(win.style.top) + offy;
        }

    }

    //停止拖动;
    function stopDrag(obj)
    {
        
    if(moveable)
        
    {
            
    var win = obj.parentNode;
            
    var sha = win.nextSibling;
            
    var msg = obj.nextSibling;
            win.style.borderColor     
    = normal;
            obj.style.backgroundColor 
    = normal;
            msg.style.color           
    = normal;
            sha.style.left 
    = obj.parentNode.style.left;
            sha.style.top  
    = obj.parentNode.style.top;
            obj.releaseCapture();
            moveable 
    = false;
        }

    }

    //获得焦点;
    function getFocus(obj)
    {
        
    if(obj.style.zIndex!=index)
        
    {
            index 
    = index + 2;
            
    var idx = index;
            obj.style.zIndex
    =idx;
            obj.nextSibling.style.zIndex
    =idx-1;
        }

    }

    //最小化;
    function min(obj)
    {
        
    var win = obj.parentNode.parentNode;
        
    var sha = win.nextSibling;
        
    var tit = obj.parentNode;
        
    var msg = tit.nextSibling;
        
    var flg = msg.style.display=="none";
        
    if(flg)
        
    {
            win.style.height  
    = parseInt(msg.style.height) + parseInt(tit.style.height) + 2*2;
            sha.style.height  
    = win.style.height;
            msg.style.display 
    = "block";
            obj.innerHTML 
    = "0";
        }

        
    else
        
    {
            win.style.height  
    = parseInt(tit.style.height) + 2*2;
            sha.style.height  
    = win.style.height;
            obj.innerHTML 
    = "2";
            msg.style.display 
    = "none";
        }

    }

    //创建一个对象;
    function xWin(id,w,h,l,t,tit,msg)
    {
        index 
    = index+2;
        
    this.id      = id;
        
    this.width   = w;
        
    this.height  = h;
        
    this.left    = l;
        
    this.top     = t;
        
    this.zIndex  = index;
        
    this.title   = tit;
        
    this.message = msg;
        
    this.obj     = null;
        
    this.bulid   = bulid;
        
    this.bulid();
    }

    //初始化;
    function bulid()
    {
        
    var str = ""
            
    + "<div id=xMsg" + this.id + " "
            
    + "style='"
            
    + "z-index:" + this.zIndex + ";"
            
    + "" + this.width + ";"
            
    + "height:" + this.height + ";"
            
    + "left:" + this.left + ";"
            
    + "top:" + this.top + ";"
            
    + "background-color:" + normal + ";"
            
    + "color:" + normal + ";"
            
    + "font-size:8pt;"
            
    + "font-family:Tahoma;"
            
    + "position:absolute;"
            
    + "cursor:default;"
            
    + "border:2px solid " + normal + ";"
            
    + ""
            
    + "onmousedown='getFocus(this)'>"
                
    + "<div "
                
    + "style='"
                
    + "background-color:" + normal + ";"
                
    + "" + (this.width-2*2+ ";"
                
    + "height:20;"
                
    + "color:white;"
                
    + ""
                
    + "onmousedown='startDrag(this)' "
                
    + "onmouseup='stopDrag(this)' "
                
    + "onmousemove='drag(this)' "
                
    + "ondblclick='min(this.childNodes[1])'"
                
    + ">"
                    
    + "<span style='" + (this.width-2*12-4+ ";padding-left:3px;'>" + this.title + "</span>"
                    
    + "<span style='12;border-0px;color:white;font-family:webdings;' onclick='min(this)'>0</span>"
                    
    + "<span style='12;border-0px;color:white;font-family:webdings;' onclick='ShowHide(\""+this.id+"\",null)'>r</span>"
                
    + "</div>"
                    
    + "<div style='"
                    
    + "100%;"
                    
    + "height:" + (this.height-20-4+ ";"
                    
    + "background-color:white;"
                    
    + "line-height:14px;"
                    
    + "word-break:break-all;"
                    
    + "padding:3px;"
                    
    + "'>" + this.message + "</div>"
            
    + "</div>"
            
    + "<div id=xMsg" + this.id + "bg style='"
            
    + "" + this.width + ";"
            
    + "height:" + this.height + ";"
            
    + "top:" + this.top + ";"
            
    + "left:" + this.left + ";"
            
    + "z-index:" + (this.zIndex-1+ ";"
            
    + "position:absolute;"
            
    + "background-color:black;"
            
    + "filter:alpha(opacity=40);"
            
    + "'></div>";
        document.body.insertAdjacentHTML(
    "beforeEnd",str);
    }

    //显示隐藏窗口
    function ShowHide(id,dis){
        
    var bdisplay = (dis==null)?((document.getElementById("xMsg"+id).style.display=="")?"none":""):dis
        document.getElementById(
    "xMsg"+id).style.display = bdisplay;
        document.getElementById(
    "xMsg"+id+"bg").style.display = bdisplay;
    }

    //modify by haiwa @ 2005-7-14 
    //
    http://www.51windows.Net
    //
    -->
    </script>

    <script language='JScript'>
    <!--
    function initialize()
    {

        
    var b = new xWin("2",240,200,100,100,"印章窗口","这里面是一个透明的GIF印章图");
    }

    window.onload 
    = initialize;
    //-->
    </script>
    </head>
    <base target="_blank">
    <body onselectstart='return false' oncontextmenu='return false>
    <a onclick="ShowHide('2',null);return false;" href="">加盖印章</a>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/yg_zhang/p/570500.html
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