js单元格操作类 – 筚路蓝缕

&lt;script language="JavaScript" type="text/JavaScript"&gt;  
/*---------------------------------------------------------------------------  
表格、单元格操作类
功能：      合并单元格，拆分单元格，向上插入行，向下插入行，向左插入列，   向右插入列，删除行，删除列  
设计思路：      将表格按总行与总列数进行网状分割，为每个座标网格找到对应的单元格，   这样，在操作过程中就可以随时找出每个单元格的位置及属性  适用IE5.0以上
 -----------------------------------------------------------------------------*/    
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&lt;/script&gt;
&lt;meta http-equiv="Content-Type" content="text/html; charset=gb2312"&gt;
&lt;table border="0" cellpadding="5" cellspacing="1" bgcolor="#999999"&gt;
&lt;tr bgcolor="#FFFFFF"&gt;
	&lt;td align="right" bgcolor="#efefef"&gt;
		合并单元格
	&lt;/td&gt;
	&lt;td&gt;
		&lt;input type="button" name="Submit2" value="向上" onclick="table_change('merge','up')"&gt;&lt;input type="button" name="Submit22" value="向下" onclick="table_change('merge','down')"&gt;&lt;input type="button" name="Submit23" value="向左" onclick="table_change('merge','left')"&gt;&lt;input type="button" name="Submit24" value="向右" onclick="table_change('merge','right')"&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#FFFFFF"&gt;
	&lt;td align="right" bgcolor="#efefef"&gt;
		拆分单元格
	&lt;/td&gt;
	&lt;td&gt;
		&lt;input type="button" name="Submit2424" value="拆成3行" onclick="table_change('rowsplit',3)"&gt;&lt;input type="button" name="Submit24242" value="拆成2列" onclick="table_change('colsplit',2)"&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#FFFFFF"&gt;
	&lt;td align="right" bgcolor="#efefef"&gt;
		插入行
	&lt;/td&gt;
	&lt;td&gt;
		&lt;input type="button" name="Submit242" value="向上插入3行" onclick="table_change('insertrow_up',3)"&gt;&lt;input type="button" name="Submit2422" value="向下插入2行" onclick="table_change('insertrow_down',2)"&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#FFFFFF"&gt;
	&lt;td align="right" bgcolor="#efefef"&gt;
		插入列
	&lt;/td&gt;
	&lt;td&gt;
		&lt;input type="button" name="Submit2423" value="向左插入3列" onclick="table_change('insertcol_left',3)"&gt;&lt;input type="button" name="Submit24223" value="向右插入2列" onclick="table_change('insertcol_right',2)"&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#FFFFFF"&gt;
	&lt;td align="right" bgcolor="#efefef"&gt;
		删除行
	&lt;/td&gt;
	&lt;td&gt;
		&lt;input type="button" name="Submit24222" value="删除行" onclick="table_change('deleterow')"&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr bgcolor="#FFFFFF"&gt;
	&lt;td align="right" bgcolor="#efefef"&gt;
		删除列
	&lt;/td&gt;
	&lt;td&gt;
		&lt;input type="button" name="Submit242222" value="删除列" onclick="table_change('deletecol')"&gt;
	&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
 使用方式：先在单元格中建立一个选区，再点击上面按钮&lt;br&gt;
&lt;table width="100%" border="1"&gt;
&lt;tr&gt;
	&lt;td colspan="2"&gt;
		1
	&lt;/td&gt;
	&lt;td&gt;
		2
	&lt;/td&gt;
	&lt;td&gt;
		3
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;td bgcolor="#CCCCCC"&gt;
		?
	&lt;/td&gt;
	&lt;td rowspan="2"&gt;
		47
	&lt;/td&gt;
	&lt;td&gt;
		5
	&lt;/td&gt;
	&lt;td&gt;
		6
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;td rowspan="3"&gt;
		45
	&lt;/td&gt;
	&lt;td&gt;
		8
	&lt;/td&gt;
	&lt;td bgcolor="#CCCCCC"&gt;
		9
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;td rowspan="3"&gt;
		10
	&lt;/td&gt;
	&lt;td bgcolor="#FFFFCC"&gt;
		11
	&lt;/td&gt;
	&lt;td rowspan="2"&gt;
		1214
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;td bgcolor="#CCCCCC"&gt;
		13
	&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
	&lt;td&gt;
		123
	&lt;/td&gt;
	&lt;td bgcolor="#CCCCCC"&gt;
		?
	&lt;/td&gt;
	&lt;td&gt;
		6
	&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;

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/*---------------------------------------------------------------------------

表格、单元格操作类

功能：合并单元格，拆分单元格，向上插入行，向下插入行，向左插入列，向右插入列，删除行，删除列

设计思路：将表格按总行与总列数进行网状分割，为每个座标网格找到对应的单元格，这样，在操作过程中就可以随时找出每个单元格的位置及属性适用IE5.0以上

-----------------------------------------------------------------------------*/

function LwgTable() {

this.tdobj;

this.trobj;

this.tblobj;

this.xy = new Array();

this.x;

this.y;

}

function tmpObj(x, y, obj) {

this.x = x;

this.y = y;

this.obj = obj;

}

LwgTable.prototype.getObj = function () {

var tdobj = document.selection.createRange().parentElement();

if (!tdobj || tdobj.tagName != "TD") return false;

var trobj = tdobj.parentElement;

if (!trobj || trobj.tagName != "TR") return false;

var tblobj = trobj.parentElement.parentElement;

if (!tblobj || tblobj.tagName != "TABLE") return false;

this.tdobj = tdobj;

this.trobj = trobj;

this.tblobj = tblobj;

return true;

}

LwgTable.prototype.setxy = function () {

for (var i = 0; i < this.tblobj.rows.length; i++) this.xy[i] = new Array();

for (var i = 0; i < this.tblobj.rows.length; i++) {

var tmp_row = this.tblobj.rows[i];

var tmp_y = 0;

for (var n = 0; n < tmp_row.cells.length; n++) {

var tmp_cell = tmp_row.cells[n];

if (this.tdobj == tmp_cell) {

this.x = i;

tmp_y = this.y = this.findy(i, tmp_y);

}

for (var c = 0; c < tmp_cell.colSpan; c++) {

for (var r = 0; r < tmp_cell.rowSpan; r++) {

var tmp_ir = i + r;

var tmp_y = this.findy(tmp_ir, tmp_y);

if (c == 0 && r == 0) var tmp_obj = new tmpObj(i, tmp_y, tmp_cell);

this.xy[tmp_ir][tmp_y] = tmp_obj;

}

tmp_y++;

}

LwgTable.prototype.findy = function (x, y) {

if (!this.xy[x][y]) return y;

else return this.findy(x, y + 1);

}

LwgTable.prototype.mergeCell = function (what) {

switch (what) {

case "up":

var tmp_obj = this.checkToMerge(-1, 0);

if (!tmp_obj) return false;

if (this.tdobj.innerHTML != "?") tmp_obj.obj.innerHTML += this.tdobj.innerHTML;

tmp_obj.obj.rowSpan += this.dropCell(this.trobj.rowIndex, this.tdobj.cellIndex, 'r');

break;

case "down":

var tmp_obj = this.checkToMerge(this.tdobj.rowSpan, 0);

if (!tmp_obj) return false;

if (tmp_obj.obj.innerHTML != "?") this.tdobj.innerHTML += tmp_obj.obj.innerHTML;

this.tdobj.rowSpan += this.dropCell(this.trobj.rowIndex + this.tdobj.rowSpan, tmp_obj.obj.cellIndex, 'r');

break;

case "left":

var tmp_obj = this.checkToMerge(0, -1);

if (!tmp_obj) return false;

if (this.tdobj.innerHTML != "?") tmp_obj.obj.innerHTML += this.tdobj.innerHTML;

tmp_obj.obj.colSpan += this.dropCell(this.trobj.rowIndex, this.tdobj.cellIndex, 'c');

break;

case "right":

var tmp_obj = this.checkToMerge(0, this.tdobj.colSpan);

if (!tmp_obj) return false;

if (tmp_obj.obj.innerHTML != "?") this.tdobj.innerHTML += tmp_obj.obj.innerHTML;

this.tdobj.colSpan += this.dropCell(this.trobj.rowIndex, this.tdobj.cellIndex + 1, 'c');

break;

default:

break;

}

LwgTable.prototype.checkToMerge = function (x, y) {

if (!this.xy[this.x + x]) return false;

var tmp_obj = this.xy[this.x + x][this.y + y];

if (!tmp_obj) return false;

if (x != 0) {

if (tmp_obj.y != this.y || tmp_obj.obj.colSpan != this.tdobj.colSpan) return false;

} else if (y != 0) {

if (tmp_obj.x != this.x || tmp_obj.obj.rowSpan != this.tdobj.rowSpan) return false;

}

return tmp_obj;

}

LwgTable.prototype.dropCell = function (x, y, kind) {

var trobj = this.tblobj.rows[x];

if (!trobj) return false;

var rowspans = trobj.cells[y].rowSpan;

var colspans = trobj.cells[y].colSpan;

trobj.deleteCell(y);

if (kind == "r") return rowspans;

else if (kind == "c") return colspans;

}

LwgTable.prototype.changeRowspan = function (x, num) {

var y = 0;

while (y < this.xy[x].length) {

var tmp = this.xy[x][y];

if (tmp.obj.rowSpan > 1) {

tmp.obj.rowSpan += num;

}

y += tmp.obj.colSpan;

}

LwgTable.prototype.insertRow = function (what, num) {

var x = this.x;

var x1 = (what == 'up') ? x : (x + 1);

if (x1 == this.tblobj.rows.length) {

for (var n = 0; n < num; n++) {

var newRow = this.tblobj.insertRow(x1);

var lastxy = this.xy[this.xy.length - 1];

var i = 0;

while (i < lastxy.length) {

var newCell = newRow.insertCell();

newCell.innerHTML = "?";

newCell.mergeAttributes(lastxy[i].obj);

newCell.rowSpan = 1;

i += lastxy[i].obj.colSpan;

}

return true;

}

for (var n = 0; n < num; n++) {

var trobj = this.tblobj.rows[x];

var newRow = this.tblobj.insertRow(x1);

var delcell = new Array();

for (var i = 0; i < trobj.cells.length; i++) {

if (trobj.cells[i].rowSpan == 1) {

var newCell = newRow.insertCell();

newCell.innerHTML = "?";

newCell.mergeAttributes(trobj.cells[i])

} else if (what == 'up') {

var newCell = newRow.insertCell();

trobj.cells[i].rowSpan += 1;

newCell.innerHTML = trobj.cells[i].innerHTML;

delcell[i] = 1;

newCell.mergeAttributes(trobj.cells[i])

}

var deli = 0;

for (i in delcell) {

trobj.deleteCell(i - deli);

deli++;

}

this.changeRowspan(this.x, num);

}

LwgTable.prototype.deleteRow = function () {

if (this.trobj.rowIndex == this.tblobj.rows.length - 1) {

this.tblobj.deleteRow(this.trobj.rowIndex);

return true;

}

var y = 0;

while (y < this.xy[this.x].length) {

var tmp_obj = this.xy[this.x][y].obj;

if (tmp_obj.rowSpan > 1) {

tmp_obj.rowSpan -= 1;

if (tmp_obj.parentElement.rowIndex == this.x) {

if (tmp_obj.cellIndex < this.trobj.cells.length - 1) var cellIndex = this.xy[this.x + 1][y + tmp_obj.colSpan].obj.cellIndex;

else var cellIndex = this.tblobj.rows[this.x + 1].cells.length;

newCell = this.tblobj.rows[this.x + 1].insertCell(cellIndex);

newCell.replaceNode(tmp_obj);

}

y += tmp_obj.colSpan;

}

this.tblobj.deleteRow(this.trobj.rowIndex);

}

LwgTable.prototype.deleteCol = function () {

var x = 0;

while (x < this.xy.length) {

var tmp_obj = this.xy[x][this.y].obj;

x += tmp_obj.rowSpan

if (tmp_obj.colSpan == 1) {

tmp_obj.parentElement.deleteCell(tmp_obj.cellIndex);

} else tmp_obj.colSpan -= 1;

}

LwgTable.prototype.insertCol = function (what, num) {

var x = 0;

while (x < this.xy.length) {

var tmp_obj = this.xy[x][this.y].obj;

x += tmp_obj.rowSpan

if (tmp_obj.colSpan == 1) {

var cellIndex = (what == "right") ? (tmp_obj.cellIndex + 1) : tmp_obj.cellIndex;

for (var n = 0; n < num; n++) {

var newCell = tmp_obj.parentElement.insertCell(cellIndex);

newCell.innerHTML = "?";

newCell.mergeAttributes(tmp_obj)

}

} else tmp_obj.colSpan += num;

}

LwgTable.prototype.rowSplit = function (num) {

if (num < 2) return false;

while (num > 1) {

var y = 0;

var tmp_x = this.x + this.tdobj.rowSpan - 1;

var tmp_index = 0;

while (y < this.xy[tmp_x].length) {

vartmp_obj = this.xy[tmp_x][y]

if (this.tdobj.rowSpan > 1) {

if (tmp_obj.obj == this.tdobj) {

var newCell = this.tblobj.rows[tmp_x].insertCell(tmp_index);

newCell.innerHTML = "?";

newCell.mergeAttributes(this.tdobj);

newCell.rowSpan = 1

}

if (tmp_x == tmp_obj.x) tmp_index++;

} else {

if (tmp_obj.obj == this.tdobj) {

var newRow = this.tblobj.insertRow(this.x + 1);

var newCell = newRow.insertCell(0);

newCell.innerHTML = "?";

} else tmp_obj.obj.rowSpan += 1;

}

y += tmp_obj.obj.colSpan;

}

if (this.tdobj.rowSpan > 1)

this.tdobj.rowSpan -= 1;

num -= 1;

}

LwgTable.prototype.colSplit = function (num) {

var x = 0;

while (x < this.xy.length) {

var tmp_obj = this.xy[x][this.y].obj;

x += tmp_obj.rowSpan

if (tmp_obj == this.tdobj) {

for (var n = 0; n < num; n++) {

var newCell = tmp_obj.parentElement.insertCell(this.tdobj.cellIndex);

newCell.innerHTML = "?";

newCell.mergeAttributes(tmp_obj)

}

} else tmp_obj.colSpan += num;

}

function table_change() {

var t = new LwgTable();

if (!t.getObj()) return false;

t.setxy();

var args = table_change.arguments;

switch (args[0]) {

case "insertrow_up":

t.insertRow('up', args[1]);

break;

case "insertrow_down":

t.insertRow('down', args[1]); break;

case "deleterow":

t.deleteRow(); break;

case "deletecol":

t.deleteCol(); break;

case "insertcol_left":

t.insertCol('left', args[1]); break;

case "insertcol_right":

t.insertCol('right', args[1]); break;

case "rowsplit":

t.rowSplit(args[1]); break;

case "colsplit":

t.colSplit(args[1]); break;

case "merge":

t.mergeCell(args[1]);

break

default:

break;

}

</script>

合并单元格

</td>

<td>

</td>

</tr>

拆分单元格

</td>

<td>

</td>

</tr>

插入行

</td>

<td>

</td>

</tr>

插入列

</td>

<td>

</td>

</tr>

删除行

</td>

<td>

</td>

</tr>

删除列

</td>

<td>

</td>

</tr>

</table>

使用方式：先在单元格中建立一个选区，再点击上面按钮<br>

<tr>

</td>

<td>

</td>

<td>

</td>

</tr>

<tr>

</td>

</td>

<td>

</td>

<td>

</td>

</tr>

<tr>

</td>

<td>

</td>

</td>

</tr>

<tr>

</td>

</td>

1214

</td>

</tr>

<tr>

</td>

</tr>

<tr>

<td>

123

</td>

</td>

<td>

</td>

</tr>

</table>

2025 年 7 月
一	二	三	四	五	六	日
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30	31

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