我试图动态添加和删除表中的行和列。虽然我尝试使用静态内容，但我的代码运行正常。同样的事情我尝试从数据库中获取数据并添加删除行/列它不起作用..添加的行被删除但值包含mysql行和列未被删除。
JavaScript的：
//*********************************Start Add Row **********************************************************
function addRowToTable() {
var tbl = document.getElementById('tbl_sales');
var columnCount = tbl.rows[0].cells.length;
var rowCount = tbl.rows.length;
var row = tbl.insertRow(rowCount);
// For Every Row Added a Checkbox on first cell--------------------------------------
var cell_1 = row.insertCell(0);
var element_1 = document.createElement("input");
element_1.type = "checkbox";
element_1.setAttribute('id', 'newCheckbox');
cell_1.appendChild(element_1);
// For Every Row Added add a Select box on Second cell------------------------------
var cell_2 = row.insertCell(1);
var element_2 = document.createElement('input');
element_2.type = "text";
element_2.setAttribute('id', 'rows');
element_2.setAttribute('name', 'rows[]');
cell_2.appendChild(element_2);
// For Every Row Added add a textbox on the rest of the cells starting with the 3rd,4th,5th... coloumns going on...
if (columnCount >= 2) {
for (var i = 3; i <= columnCount; i++) {
var newCel = row.insertCell(i - 1);
var element_3 = document.createElement("input");
element_3.type = "text";
element_3.setAttribute('id', 'name');
element_3.setAttribute('name', 'name[]');
newCel.appendChild(element_3);
}
}
}
//***************************** End Add Row ***************************************************************
// *****************************Start Add Column**********************************************************
function addColumn() {
var tblBodyObj = document.getElementById('tbl_sales').tBodies[0];
var rowCount = tblBodyObj.rows.length;
//for every Coloumn Added Add checkbox on first row ----------------------------------------------
var newchkbxcell = tblBodyObj.rows[0].insertCell(-1);
var element_4 = document.createElement("input");
element_4.type = "checkbox";
element_4.setAttribute('id', 'newCheckbox');
newchkbxcell.appendChild(element_4);
//For Every Coloumn Added add Drop down list on second row-------------------------------------
var newselectboxcell = tblBodyObj.rows[1].insertCell(-1);
var element_5 = document.createElement('input');
element_5.type = "text";
element_5.setAttribute('id', 'cols');
element_5.setAttribute('name', 'cols[]');
newchkbxcell.appendChild(element_4);
newselectboxcell.appendChild(element_5);
for (var i = 2; i < tblBodyObj.rows.length; i++) {
var newCell = tblBodyObj.rows[i].insertCell(-1);
var element_6 = document.createElement("input");
element_6.type = "text"
element_6.setAttribute('id', 'name');
element_6.setAttribute('name', 'name[]');
newCell.appendChild(element_6)
}
}
//*****************************Start Delete Selected Rows **************************************************
function deleteSelectedRows() {
var tb = document.getElementById('tbl_sales');
var NoOfrows = tb.rows.length;
for (var i = 0; i < NoOfrows; i++) {
var row = tb.rows[i];
var chkbox = row.cells[0].childNodes[0];
if (null != chkbox && true == chkbox.checked) {
tb.deleteRow(i);
NoOfrows--;
i--;
}
}
}
//*****************************End Delete Selected Columns **************************************************
//*****************************Start Delete Selected Columns ************************************************
function deleteSelectedColoumns() {
var tb = document.getElementById('tbl_sales');
var NoOfcolumns = tb.rows[0].cells.length;
for (var clm = 3; clm < NoOfcolumns; clm++) {
var rw = tb.rows[0];
var chkbox = rw.cells[clm].childNodes[0];
console.log(clm, NoOfcolumns, chkbox);
if (null != chkbox && true == chkbox.checked) {
//-----------------------------------------------------
var lastrow = tb.rows;
for (var x = 0; x < lastrow.length; x++) {
tb.rows[x].deleteCell(clm);
}
//-----------------------------------------
NoOfcolumns--;
clm--;
} else {
//alert("not selected");
}
}
}
function deleteAllRows() {
var tbl = document.getElementById('tbl_sales'); // table reference
lastRow = tbl.rows.length - 1; // set the last row index
// delete rows with index greater then 0
for (i = lastRow; i > 0; i--) {
tbl.deleteRow(i); //delete the row
}
}
//*****************************End Delete Selected Columns **************************************************
//window.onload = function () {addColumn();addColumn();addColumn();};
网页：
<table width="30" border="1" id="tbl_sales">
<tr>
<td></td>
<td><strong>Columns</strong> </td>
{php}
$j = 0;
for($i=0;$i<count($rows[0]);$i++)
{
{/php}
<td>
{php} if($j == 0) { {/php}
<input type="button" name="adclmbutton" id="addclmnbutton" value="Add Columns" onclick="addColumn()" />
{php}}else{{/php}
<input type="checkbox" id="newCheckbox">
{php}}{/php}
</td>
{php}$j++;}{/php}
</tr>
<tr>
<td><strong>Rows</strong> </td>
<td><strong>Rows Grid</strong> </td>
{php}
$j = 0;
for($i=0;$i<count($rows[0]);$i++)
{
{/php}
<td><input type="text" name="cols[]" value="{php} echo $rows[0][$i]; {/php}" id=""/></td>
{php}}$i++;{/php}
</tr>
{php}
$seats = $CI->model_theatre->convetTable($m_arr);
unset($seats[0]);
$i = 0;
foreach ($seats as $rowName => $columns)
{
{/php}
<tr >
<td>
{php} if($i == 0) { {/php}
<input type="button" name="addrowbutton" id="adrwbutton" value="Add Row" onclick="addRowToTable();"/>
{php}}else{{/php}
<input type="checkbox" id="newCheckbox">
{php}}{/php}</td>
<td><input type="text" name="rows[]" value="{php}echo $rowName;{/php}" /></td>
{php}
foreach ($columns as $cell)
{
{/php}
<td><label for="textfield"></label><input type="text" name="name[]" value="{php} echo $cell;{/php}" width="50px" /></td>
{php}
}
{/php}
</tr>
{php}
$i++;
}
{/php}
</table>
{php}
}
{/php}
<p>
<input type="button" name="button3" id="button3" value="Remove Selected Row" onClick="deleteSelectedRows()" />
<input type="button" value="Delete all rows" onClick="deleteAllRows()" />
<input type="button" name="button4" id="button4" value="Remove Selected Column" onClick="deleteSelectedColoumns()" />
</p>
答案 0 :(得分：0)
当您添加，删除您还需要添加的行时，使用AJAX调用删除数据库中的该行。