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  • 很强大的 js拖曳效果

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

    <!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 runat="server">
    <title></title>
    <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 = "&nbsp;";
    },

    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")]
    }

    ]);
    });

    </script>
    <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;
    }

    </style>

    <!--Javascript 位置-->

    </head>

    </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>

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  • 原文地址:https://www.cnblogs.com/wdw31210/p/2345075.html
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