根据坐标、宽高在表格上放置Div,以及Div拖动的问题？？？？？

一个很好的 拖动的例子
http://www.walterzorn.com/dragdrop/dragdrop_e.htm

解决方案 »

  1.   

    还有这些教程
    http://www.webreference.com/programming/javascript/mk/column2/index.html
      

  2.   

    看看这个例子
    <html>
    <head>
    <title>_xWin</title>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312"><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 + ";"
    + "width:" + 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 + ";"
    + "width:" + (this.width-2*2) + ";"
    + "height:20;"
    + "color:white;"
    + "' "
    + "onmousedown='startDrag(this)' "
    + "onmouseup='stopDrag(this)' "
    + "onmousemove='drag(this)' "
    + "ondblclick='min(this.childNodes[1])'"
    + ">"
    + "<span style='width:" + (this.width-2*12-4) + ";padding-left:3px;'>" + this.title + "</span>"
    + "<span style='width:12;border-width:0px;color:white;font-family:webdings;' onclick='min(this)'>0</span>"
    + "<span style='width:12;border-width:0px;color:white;font-family:webdings;' onclick='ShowHide(\""+this.id+"\",null)'>r</span>"
    + "</div>"
    + "<div style='"
    + "width: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='"
    + "width:" + 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;
    }
    //-->
    </script><script language='JScript'>
    <!--
    function initialize()
    {
    var a = new xWin("1",160,200,200,200,"窗口1","xWin <br/> A Cool Pop Div Window<br/>Version:1.0<br/>2002-8-13");
    var b = new xWin("2",240,200,100,100,"窗口2","Welcome to visited my personal website:<br/><a href=http://www.youthfly.net target=_blank>http://www.youthfly.net</a><br/>anducanalsosignmyguestbookat:<br/><ahref=http://www ... youthfly.net</a><br/><br/>thx!!!=)..."); 
    var c = new xWin("3",750,700,140,10,"<center>个人简介</center>","Copyright by 网页一班!");
    ShowHide("1","none");
    ShowHide("2","none");
    ShowHide("3","none");//隐藏窗口1
    center('1');center('2');center('3');
    }
    window.onload = initialize;
    //-->
    function center(id)
    {
    xwin = document.getElementById("xMsg"+id);
    var wleft = (document.body.clientWidth-xwin.style.width.replace("px",""))/2 < 0 ? 0 : (document.body.clientWidth-xwin.style.width.replace("px",""))/2;
    var wtop = (document.body.clientHeight-xwin.style.height.replace("px",""))/2 < 0 ? 0 : (document.body.clientHeight-xwin.style.height.replace("px",""))/2;;

    xwin.style.left = wleft;
    xwin.style.top  = wtop;

    xwinbg = document.getElementById("xMsg"+id+"bg");
    xwinbg.style.left = wleft;
    xwinbg.style.top  = wtop;
    }
    </script>
    </head>
    <!--<base target="_blank">-->
    <body onselectstart='return false' oncontextmenu='return false'>
    <a href="javascript:ShowHide('1',null)" >窗口1</a>
    <a  href="javascript:ShowHide('2',null)">窗口2</a>
    <a  href="javascript:ShowHide('3',null)">窗口3</a>
    </body>
    </html>