JS动态拖动表格实现列内容的交换博客分类： js js表格拖动

程序员文章站 2024-03-25 18:37:58

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<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>JS动态拖动表格实现列内容的交换</TITLE>
<STYLE>
td{width:20%;height:20px;border-bottom:1px solid black;border-right:1px solid black;cursor:default;}
div{font-size:13px;}
th{height:20px;font-size:12px;font-weight:normal;border-bottom:2px solid black;background-color:#CCCCCC}
table{border:1px solid black;font-size:13px;}
</STYLE>
<script language="javascript">
/************************************ dragedTableData.js *******************************/
/************************************ dragedTableData.js *******************************/
/*
* created by yzh 2002.4.12
* 可以实现表格内容的内部拖动
* 确保中间过度层的存在，id为指定
* 请大家引用时保留这段作者声明，此代码为开源代码；使用不受限制，欢迎大家采用本人所写JS动态拖动表格实现代码。
*/

/*--------全局变量-----------*/
var dragedTable_x0,dragedTable_y0,dragedTable_x1,dragedTable_y1;
var dragedTable_movable = false;
var dragedTable_preCell = null;
var dragedTable_normalColor = null;
//起始单元格的颜色
var dragedTable_preColor = "lavender";
//目标单元格的颜色
var dragedTable_endColor = "#FFCCFF";
var dragedTable_movedDiv = "dragedTable_movedDiv";
var dragedTable_tableId = "";
/*--------全局变量-----------*/

function DragedTable(tableId)
{
    dragedTable_tableId = tableId;
    var oTempDiv = document.createElement("div");
    oTempDiv.id = dragedTable_movedDiv;
    oTempDiv.onselectstart = function(){return false};
    oTempDiv.style.cursor = "hand";
    oTempDiv.style.position = "absolute";
    oTempDiv.style.border = "1px solid black";
    oTempDiv.style.backgroundColor = dragedTable_endColor;
    oTempDiv.style.display = "none";
    document.body.appendChild(oTempDiv);
    document.all(tableId).onmousedown = showDiv;
}

//得到控件的绝对位置
function getPos(cell)
{
    var pos = new Array();
    var t=cell.offsetTop;
    var l=cell.offsetLeft;
    while(cell=cell.offsetParent)
    {
        t+=cell.offsetTop;
        l+=cell.offsetLeft;
    }
    pos[0] = t;
    pos[1] = l;
    return pos;
}

//显示图层
function showDiv()
{
    var obj = event.srcElement;
    var pos = new Array();
    //获取过度图层
    var oDiv = document.all(dragedTable_movedDiv);
    if(obj.tagName.toLowerCase() == "td")
    {
        obj.style.cursor = "hand";
        pos = getPos(obj);
        //计算中间过度层位置，赋值
        oDiv.style.width = obj.offsetWidth;
        oDiv.style.height = obj.offsetHeight;
        oDiv.style.top = pos[0];
        oDiv.style.left = pos[1];
        oDiv.innerHTML = obj.innerHTML;
        oDiv.style.display = "";
        dragedTable_x0 = pos[1];
        dragedTable_y0 = pos[0];
        dragedTable_x1 = event.clientX;
        dragedTable_y1 = event.clientY;
        //记住原td
        dragedTable_normalColor = obj.style.backgroundColor;
        obj.style.backgroundColor = dragedTable_preColor;
        dragedTable_preCell = obj;

        dragedTable_movable = true;
    }
}
function dragDiv()
{
    if(dragedTable_movable)
    {
        var oDiv = document.all(dragedTable_movedDiv);
        var pos = new Array();
        oDiv.style.top = event.clientY - dragedTable_y1 + dragedTable_y0;
        oDiv.style.left = event.clientX - dragedTable_x1 + dragedTable_x0;
        var oTable = document.all(dragedTable_tableId);
        for(var i=0; i<oTable.cells.length; i++)
        {
            if(oTable.cells[i].tagName.toLowerCase() == "td")
            {
                pos = getPos(oTable.cells[i]);
                if(event.x>pos[1]&&event.x<pos[1]+oTable.cells[i].offsetWidth
                   && event.y>pos[0]&& event.y<pos[0]+oTable.cells[i].offsetHeight)
                {
                    if(oTable.cells[i] != dragedTable_preCell)
                        oTable.cells[i].style.backgroundColor = dragedTable_endColor;
                }
                else
                {
                    if(oTable.cells[i] != dragedTable_preCell)
                        oTable.cells[i].style.backgroundColor = dragedTable_normalColor;
                }
            }
        }
    }
}

document.onmouseup = function()
{
    hideDiv();
    var oTable = document.all(dragedTable_tableId);
    for(var i=0; i<oTable.cells.length; i++)
        oTable.cells[i].style.backgroundColor = dragedTable_normalColor;
}

document.onmousemove = function()
{
dragDiv();
}

/************************************ dragedTableData.js 结束 *******************************/
/************************************ dragedTableData.js 结束 *******************************/
</script>
<script language="javascript">
function init()
{
//注册可拖拽表格
new DragedTable("tableId");
}
</script>
</HEAD>
<BODY oncontextmenu="return false;" onload="init()">
<TABLE id="tableId" width="70%" align="center" cellpadding="0" cellspacing="0">
<TR>
    <TH colspan="4" style="">拖动交换单元格内容</TH>
</TR>
<TR>
    <TD>Java</TD>
    <TD>Java One </TD>
    <TD>JBuilder</TD>
    <TD>Stuts</TD>
</TR>
<TR>
    <TD>C++</TD>
    <TD>Visual Studio</TD>
    <TD>Office</TD>
    <TD>Windows</TD>
</TR>
</TABLE>
</BODY>
</HTML>

JS动态拖动表格实现列内容的交换博客分类： js js表格拖动