我有一个有两个按钮的表(添加和删除)。该表包含三列(一个复选框,一个文本字段和一个下拉框。)因此,当我单击“添加”按钮时,插入一个新复选框,一个文本字段和一个下拉框。我想要做的是添加一个包含Serial-No的列。 serial-No应该随着每一个新行而增加。喜欢...... 1,2,3,4等。然后,当我想要删除一行时,我会勾选复选框上的标记,然后按删除按钮,该特定行将被删除。 serial-No应该重新安排。我的代码如下:
HTML
<div class="container">
<INPUT type="button" value="Add Row" onclick="addRow('dataTable')" />
<INPUT type="button" value="Delete Row" onclick="deleteRow('dataTable')" />
<TABLE id="dataTable" width="350px" border="1">
<TR>
<TD><INPUT type="checkbox" name="chk"/></TD>
<TD><INPUT type="text" name="txt"/></TD>
<TD>
<SELECT name="country">
<OPTION value="in">India</OPTION>
<OPTION value="de">Germany</OPTION>
<OPTION value="fr">France</OPTION>
<OPTION value="us">United States</OPTION>
<OPTION value="ch">Switzerland</OPTION>
</SELECT>
</TD>
</TR>
</TABLE>
的Javascript
<SCRIPT language="javascript">
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var colCount = table.rows[0].cells.length;
for(var i=0; i<colCount; i++) {
var newcell = row.insertCell(i);
newcell.innerHTML = table.rows[0].cells[i].innerHTML;
switch(newcell.childNodes[0].type) {
case "text":
newcell.childNodes[0].value = "";
break;
case "checkbox":
newcell.childNodes[0].checked = false;
break;
case "select-one":
newcell.childNodes[0].selectedIndex = 0;
break;
}
}
}
function deleteRow(tableID) {
try {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
for(var i=0; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
if(rowCount <= 1) {
alert("Cannot delete all the rows.");
break;
}
table.deleteRow(i);
rowCount--;
i--;
}
}
}catch(e) {
alert(e);
}
}
</SCRIPT>
答案 0 :(得分:1)
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var colCount = table.rows[0].cells.length;
for(var i=0; i<colCount; i++) {
var newcell = row.insertCell(i);
if(i==1){newcell.innerHTML = (rowCount+1)}
else{
newcell.innerHTML = table.rows[0].cells[i].innerHTML;
}
switch(newcell.childNodes[0].type) {
case "text":
newcell.childNodes[0].value = "";
break;
case "checkbox":
newcell.childNodes[0].checked = false;
break;
case "select-one":
newcell.childNodes[0].selectedIndex = 0;
break;
}
}
}
function regroup(i,rc,ti)
{
for(j = (i+1);j<rc;j++)
{
document.getElementById(ti).rows[j].cells[1].innerHTML = j+1;
}
}
function deleteRow(tableID) {
try {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var current = '';
for(var i=0; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
if(rowCount <= 1) {
alert("Cannot delete all the rows.");
break;
}
table.deleteRow(i);
rowCount--;
i--;
regroup(i,rowCount,tableID);
}
}
}catch(e) {
alert(e);
}
}
&#13;
<div class="container">
<INPUT type="button" value="Add Row" onclick="addRow('dataTable')" />
<INPUT type="button" value="Delete Row" onclick="deleteRow('dataTable')" />
<TABLE id="dataTable" width="350px" border="1">
<TR>
<TD><INPUT type="checkbox" name="chk"/></TD>
<TD><span name = "num">1</span></TD>
<TD><INPUT type="text" name="txt"/></TD>
<TD>
<SELECT name="country">
<OPTION value="in">India</OPTION>
<OPTION value="de">Germany</OPTION>
<OPTION value="fr">France</OPTION>
<OPTION value="us">United States</OPTION>
<OPTION value="ch">Switzerland</OPTION>
</SELECT>
</TD>
</TR>
</TABLE>
&#13;
尝试上述方法,看看它是否适合您, 我刚才 和一个数字的单元格, 然后当创建一个新行时,新列中该单元格的值由新创建的行添加的行数1给出我也有 包括一个函数来更新删除列之后每行的序列号单元格的值。