出处不可考，只是收藏一下。代码保存为test.htm然后用浏览器打开即可看到效果。
这个例子不但可以拖放，而且可以停靠。
<!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> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>Freedom</title> <mce:style type="text/css"><!-- body { 100%; max-height:100%; padding:0px; margin:0px; text-align:center; } .cell { float:left; clear:right; } .row { clear:both; } .r_nbsp { 20px; } .root { 868px; margin: 0 auto; } .root * { /*次属性FF的说*/ -moz-user-select:none; } .line { 202px; line-height:20px; height:20px; overflow:hidden; font-size:12px; } .move { border:#CCCCCC 1px solid; 200px; height:aotu; } .title { height:24px; cursor:move; background:#0080C0; font-size:12px; font-weight:bold; color:#FFFFFF; line-height:24px; text-align:center; } .content { border-top:#CCCCCC 1px solid; height:100px; background-color:#F7F7F7; } .CDrag_temp_div { border:#CCCCCC 1px dashed; } --></mce:style><style type="text/css" mce_bogus="1">body { 100%; max-height:100%; padding:0px; margin:0px; text-align:center; } .cell { float:left; clear:right; } .row { clear:both; } .r_nbsp { 20px; } .root { 868px; margin: 0 auto; } .root * { /*次属性FF的说*/ -moz-user-select:none; } .line { 202px; line-height:20px; height:20px; overflow:hidden; font-size:12px; } .move { border:#CCCCCC 1px solid; 200px; height:aotu; } .title { height:24px; cursor:move; background:#0080C0; font-size:12px; font-weight:bold; color:#FFFFFF; line-height:24px; text-align:center; } .content { border-top:#CCCCCC 1px solid; height:100px; background-color:#F7F7F7; } .CDrag_temp_div { border:#CCCCCC 1px dashed; }</style> <mce:script type="text/javascript"><!-- var Class = { //创建类 create: function () { return function () { this.initialize.apply(this, arguments); }; } }; var $A = function (a) { //转换数组 return a ? Array.apply(null, a) : new Array; }; var $ = function (id) { //获取对象 return document.getElementById(id); }; Object.extend = function (a, b) { //追加方法 for (var i in b) a[i] = b[i]; return a; }; Object.extend(Object, { addEvent : function (a, b, c, d) { //添加函数 if (a.attachEvent) a.attachEvent(b[0], c); else a.addEventListener(b[1] || b[0].replace(/^on/, ""), c, d || false); return c; }, delEvent : function (a, b, c, d) { if (a.detachEvent) a.detachEvent(b[0], c); else a.removeEventListener(b[1] || b[0].replace(/^on/, ""), c, d || false); return c; }, reEvent : function () { //获取 Event return window.event ? window.event : (function (o) { do { o = o.caller; } while (o && !/^/[object[ A-Za-z]*Event/]$/.test(o.arguments[0])); return o.arguments[0]; })(this.reEvent); } }); Function.prototype.bind = function () { //绑定事件 var wc = this, a = $A(arguments), o = a.shift(); return function () { wc.apply(o, a.concat($A(arguments))); }; }; var Table = Class.create(); Table.prototype = { initialize : function () { //初始化 var wc = this; wc.cols = new Array; //创建列 }, addCols : function (o) { //添加列 var wc = this, cols = wc.cols, i = cols.length; return cols[i] = { id : i, div : o, rows : new Array, //创建行 addRow : wc.addRow, chRow : wc.chRow, inRow : wc.inRow, delRow : wc.delRow }; }, addRow : function (o) { //添加行 var wc = this, rows = wc.rows, i = rows.length; return rows[i] = { id : i, div : o, cols : wc }; }, inRow : function (a, b) { //插入行 var wc = b.cols = this, rows = wc.rows, i; if (a < rows.length) { for (i = a ; i < rows.length ; i ++) rows[i].id ++; rows.splice(a, 0, b); b.id = a; return b; } else { b.id = rows.length; return rows[b.id] = b; } }, delRow : function (a) { //删除列 var wc = this, rows = wc.rows, i, r; if (a >= rows.length) return; r = rows[a]; rows.splice(a, 1); for (i = a ; i < rows.length ; i ++) rows[i].id = i; return r; } }; var CDrag = Class.create(); CDrag.IE = /MSIE/.test(window.navigator.userAgent); CDrag.prototype = { initialize : function () { //初始化成员 var wc = this; wc.table = new Table; //建立表格对象 wc.iFunc = wc.eFunc = null; wc.obj = { on : { a : null, b : "" }, row : null, left : 0, top : 0 }; wc.temp = { row : null, div : document.createElement("div") }; wc.temp.div.setAttribute(CDrag.IE ? "className" : "class", "CDrag_temp_div"); wc.temp.div.innerHTML = " "; }, reMouse : function (a) { //获取鼠标位置 var e = Object.reEvent(); return { x : document.documentElement.scrollLeft + e.clientX, y : document.documentElement.scrollTop + e.clientY }; }, rePosition : function (o) { //获取元素绝对位置 var $x = $y = 0; do { $x += o.offsetLeft; $y += o.offsetTop; } while ((o = o.offsetParent) && o.tagName != "BODY"); return { x : $x, y : $y }; }, sMove : function (o) { //当拖动开始时设置参数 var wc = this; if (wc.iFunc || wc.eFinc) return; var mouse = wc.reMouse(), obj = wc.obj, temp = wc.temp, div = o.div, position = wc.rePosition(div); obj.row = o; obj.on.b = "me"; obj.left = mouse.x - position.x; obj.top = mouse.y - position.y; temp.row = document.body.appendChild(div.cloneNode(true)); //复制预拖拽对象 with (temp.row.style) { //设置复制对象 position = "absolute"; left = mouse.x - obj.left + "px"; top = mouse.y - obj.top + "px"; zIndex = 100; opacity = "0.3"; filter = "alpha(opacity:30)"; } with (temp.div.style) { //设置站位对象 height = div.clientHeight + "px"; width = div.clientWidth + "px"; } /*div.parentNode.insertBefore(temp.div, div); div.style.display = "none"; // 隐藏预拖拽对象*/ div.parentNode.replaceChild(temp.div, div); wc.iFunc = Object.addEvent(document, ["onmousemove"], wc.iMove.bind(wc)); wc.eFunc = Object.addEvent(document, ["onmouseup"], wc.eMove.bind(wc)); document.onselectstart = new Function("return false"); }, iMove : function () { //当鼠标移动时设置参数 var wc = this, cols = wc.table.cols, mouse = wc.reMouse(), obj = wc.obj, temp = wc.temp, row = obj.row, div = temp.row, t_position, t_cols, t_rows, i, j; with (div.style) { left = mouse.x - obj.left + "px"; top = mouse.y - obj.top + "px"; } for (i = 0 ; i < cols.length ; i ++) { t_cols = cols[i]; t_position = wc.rePosition(t_cols.div); if (t_position.x < mouse.x && t_position.x + t_cols.div.offsetWidth > mouse.x) { if (t_cols.rows.length > 0) { //如果此列行数大于0 if (wc.rePosition(t_cols.rows[0].div).y + 20 > mouse.y) { //如果鼠标位置大于第一行的位置即是最上。。 //向上 obj.on.a = t_cols.rows[0]; obj.on.b = "up"; obj.on.a.div.parentNode.insertBefore(temp.div, obj.on.a.div); } else if (t_cols.rows.length > 1 && t_cols.rows[0] == row && wc.rePosition(t_cols.rows[1].div).y + 20 > mouse.y) { //如果第一行是拖拽对象而第鼠标大于第二行位置则，没有动。。 //向上 obj.on.b = "me"; t_cols.rows[1].div.parentNode.insertBefore(temp.div, t_cols.rows[1].div); } else { for (j = t_cols.rows.length - 1 ; j > -1 ; j --) { //重最下行向上查询 t_rows = t_cols.rows[j]; if (t_rows == obj.row) continue; if (wc.rePosition(t_rows.div).y < mouse.y) { //如果鼠标大于这行则在这行下面 if (t_rows.id + 1 < t_cols.rows.length && t_cols.rows[t_rows.id + 1] != obj.row) { //如果这行有下一行则重这行下一行的上面插入 t_cols.rows[t_rows.id + 1].div.parentNode. insertBefore(temp.div, t_cols.rows[t_rows.id + 1].div); obj.on.a = t_rows; obj.on.b = "down"; } else if (t_rows.id + 2 < t_cols.rows.length) { //如果这行下一行是拖拽对象则插入到下两行，即拖拽对象返回原位 t_cols.rows[t_rows.id + 2].div.parentNode. insertBefore(temp.div, t_cols.rows[t_rows.id + 2].div); obj.on.b = "me"; } else { //前面都没有满足则放在最低行 t_rows.div.parentNode.appendChild(temp.div); obj.on.a = t_rows; obj.on.b = "down"; } return; } } } } else { //此列无内容添加新行 t_cols.div.appendChild(temp.div); obj.on.a = t_cols; obj.on.b = "new"; } } } }, eMove : function () { //当鼠标释放时设置参数 var wc = this, obj = wc.obj, temp = wc.temp, row = obj.row, div = row.div, o_cols, n_cols; if (obj.on.b == "up") { //向最上添加 o_cols = obj.row.cols; n_cols = obj.on.a.cols; n_cols.inRow(0, o_cols.delRow(obj.row.id)); } else if (obj.on.b == "down") { //相对向下添加 o_cols = obj.row.cols; n_cols = obj.on.a.cols; n_cols.inRow(obj.on.a.id + 1, o_cols.delRow(obj.row.id)); } else if (obj.on.b == "new") { //向无内容列添加 o_cols = obj.row.cols; n_cols = obj.on.a; n_cols.inRow(0, o_cols.delRow(obj.row.id)); } temp.div.parentNode.replaceChild(div, temp.div); temp.row.parentNode.removeChild(temp.row); delete temp.row; Object.delEvent(document, ["onmousemove"], wc.iFunc); Object.delEvent(document, ["onmouseup"], wc.eFunc); document.onselectstart = wc.iFunc = wc.eFunc = null; }, add : function (o) { //添加对象 var wc = this; Object.addEvent(o.div.childNodes[CDrag.IE ? 0 : 1], ["onmousedown"], wc.sMove.bind(wc, o)); }, parse : function (o) { //初始化成员 var wc = this, table = wc.table, cols, i, j; for (i = 0 ; i < o.length ; i ++) { cols = table.addCols(o[i].cols); for (j = 0 ; j < o[i].rows.length ; j ++) wc.add(cols.addRow(o[i].rows[j])); } } }; Object.addEvent(window, ["onload"], function () { var wc = new CDrag; wc.parse([ { cols : $("m_1"), rows : [$("m_1_1"), $("m_1_2"), $("m_1_3"), $("m_1_4")] }, { cols : $("m_2"), rows : [$("m_2_1"), $("m_2_2"), $("m_2_3"), $("m_2_4")] }, { cols : $("m_3"), rows : [$("m_3_1"), $("m_3_2"), $("m_3_3"), $("m_3_4")] }, { cols : $("m_4"), rows : [$("m_4_1"), $("m_4_2"), $("m_4_3"), $("m_4_4")] } ]); }); // --></mce:script> </head><body><br /> <div class="root"> <div class="cell" id="m_1"> <div class="line"> 第一列</div> <div class="move" id="m_1_1"> <div class="title"> 第一列的第一个的说</div> <div class="content"> </div> </div> <div class="move" id="m_1_2"> <div class="title"> 第一列的第二个的说</div> <div class="content"> </div> </div> <div class="move" id="m_1_3"> <div class="title"> 第一列的第三个的说</div> <div class="content"> </div> </div> <div class="move" id="m_1_4"> <div class="title"> 第一列的第四个的说</div> <div class="content"> </div> </div> </div> <div class="cell r_nbsp"> </div> <div class="cell" id="m_2"> <div class="line"> 第二列</div> <div class="move" id="m_2_1"> <div class="title"> 第二列的第一个的说</div> <div class="content"> </div> </div> <div class="move" id="m_2_2"> <div class="title"> 第二列的第二个的说</div> <div class="content"> </div> </div> <div class="move" id="m_2_3"> <div class="title"> 第二列的第三个的说</div> <div class="content"> </div> </div> <div class="move" id="m_2_4"> <div class="title"> 第二列的第四个的说</div> <div class="content"> </div> </div> </div> <div class="cell r_nbsp"> </div> <div class="cell" id="m_3"> <div class="line"> 第三列</div> <div class="move" id="m_3_1"> <div class="title"> 第三列的第一个的说</div> <div class="content"> </div> </div> <div class="move" id="m_3_2"> <div class="title"> 第三列的第二个的说</div> <div class="content"> </div> </div> <div class="move" id="m_3_3"> <div class="title"> 第三列的第三个的说</div> <div class="content"> </div> </div> <div class="move" id="m_3_4"> <div class="title"> 第三列的第四个的说</div> <div class="content"> </div> </div> </div> <div class="cell r_nbsp"> </div> <div class="cell" id="m_4"> <div class="line"> 第四列</div> <div class="move" id="m_4_1"> <div class="title"> 第四列的第一个的说</div> <div class="content"> </div> </div> <div class="move" id="m_4_2"> <div class="title"> 第四列的第二个的说</div> <div class="content"> </div> </div> <div class="move" id="m_4_3"> <div class="title"> 第四列的第三个的说</div> <div class="content"> </div> </div> <div class="move" id="m_4_4"> <div class="title"> 第四列的第四个的说</div> <div class="content"> </div> </div> </div> </div> </body></html>