100分求助两个菜鸟问题：关于table的问题！！！！！

2.
<input type=button onclick="document.all.textbox.innerHTML=''">
<table>
<tr>
<td id=textbox><input type=text value=aaa></td>
</tr>
</table>

解决方案 »

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<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<SCRIPT language="javascript">
function insRow(index)
{
var oTr = document.all.table1.insertRow(index);
for(var i=0; i<document.all.table1.rows[1].cells.length; i++)
{
var oTd = oTr.insertCell(i);
oTd.innerText = i;
}
}
function clearTd()
{
document.all.td1.innerHTML = "&nbsp";
}</SCRIPT>
</HEAD><BODY>
<TABLE id="table1" width="200" border="1">
  <TR>
    <TD>b</TD>
    <TD>b</TD>
    <TD>b</TD>
    <TD>b</TD>
  </TR>
  <TR>
    <TD>b</TD>
    <TD>b</TD>
    <TD>b</TD>
    <TD>b</TD>
  </TR>
  <TR>
    <TD>v</TD>
    <TD>v</TD>
    <TD>v</TD>
    <TD>v</TD>
  </TR>
  <TR>
    <TD id="td1"><INPUT value="aaa"></TD>
    <TD>f</TD>
    <TD>f</TD>
    <TD>f</TD>
  </TR>
</TABLE>
<INPUT type="button" value="insert" onClick="insRow(2)">
<INPUT type="button" value="clear" onClick="clearTd()">
</BODY>
</HTML>
1.<table id=tb>
<tr><td>Cell1</td></tr>
<tr><td>Cell3</td></tr>
</table>
<input type=button onclick="addRow(1)" value="addRow">
<script>
function addRow(s)
{
   //参数s,插入到成为第几行,0开始
   var tr1 = tb.insertRow(s);
   var td1 = tr1.insertCell();
   td1.innerText ="Cell2";
}
</script>
2.<table id=tb>
<tr><td>Cell1</td></tr>
<tr><td><input type=text id=txt value="ttt"></td></tr>
</table>
<input type=button onclick="delText('txt')" value="delText">
<script>
function delText(element)
{
    //参数element, Text的ID
    eval(element+".outerHTML=''")
}
</script>
function addRow(rowIndex)
{
   var table = document.all("tableId");
   var newRow = table.insertRow(rowIndex);
   newCell=newRow.insertCell();
}================================================================function deleteTextbox()
{
   var table = document.all("tableId");
   table.rows(rowIndex).cells[cellIndex].innerHTML = "";
}
<HTML>
<HEAD>
<TITLE>Modifying Table Cell Content</TITLE>
<STYLE TYPE="text/css">
THEAD {background-color:lightyellow; font-weight:bold}
TFOOT {background-color:lightgreen; font-weight:bold}
#myTABLE {background-color:bisque}
</STYLE><SCRIPT LANGUAGE="JavaScript">
var theTable, theTableBody
function init() {
theTable = (document.all) ? document.all.myTABLE : document.getElementById("myTABLE")
theTableBody = theTable.tBodies[0]
}
function appendRow(form) {
insertTableRow(form, -1)
}function addRow(form) {
insertTableRow(form, form.insertIndex.value)
}function insertTableRow(form, where) {
var now = new Date()
var nowData = [now.getHours(), now.getMinutes(), now.getSeconds(), now.getMilliseconds()]
clearBGColors()
var newCell
var newRow = theTableBody.insertRow(where)
for (var i = 0; i < nowData.length; i++) {
newCell = newRow.insertCell(i)
newCell.innerHTML = nowData[i]
newCell.style.backgroundColor = "salmon"
}
updateRowCounters(form)
}function removeRow(form) {
theTableBody.deleteRow(form.deleteIndex.value)
updateRowCounters(form)
}function insertTHEAD(form) {
var THEADData = ["Hours","Minutes","Seconds","Milliseconds"]
var newCell
var newTHEAD = theTable.createTHead()
newTHEAD.id = "myTHEAD"
var newRow = newTHEAD.insertRow(-1)
for (var i = 0; i < THEADData.length; i++) {
newCell = newRow.insertCell(i)
newCell.innerHTML = THEADData[i]
}
updateRowCounters(form)
form.addTHEAD.disabled = true
form.deleteTHEAD.disabled = false
}function removeTHEAD(form) {
theTable.deleteTHead()
updateRowCounters(form)
form.addTHEAD.disabled = false
form.deleteTHEAD.disabled = true
}function insertTFOOT(form) {
var TFOOTData = ["Hours","Minutes","Seconds","Milliseconds"]
var newCell
var newTFOOT = theTable.createTFoot()
newTFOOT.id = "myTFOOT"
var newRow = newTFOOT.insertRow(-1)
for (var i = 0; i < TFOOTData.length; i++) {
newCell = newRow.insertCell(i)
newCell.innerHTML = TFOOTData[i]
}
updateRowCounters(form)
form.addTFOOT.disabled = true
form.deleteTFOOT.disabled = false
}function removeTFOOT(form) {
theTable.deleteTFoot()
updateRowCounters(form)
form.addTFOOT.disabled = false
form.deleteTFOOT.disabled = true
}function insertCaption(form) {
var captionData = form.captionText.value
var newCaption = theTable.createCaption()
newCaption.innerHTML = captionData
form.addCaption.disabled = true
form.deleteCaption.disabled = false
}function removeCaption(form) {
theTable.deleteCaption()
form.addCaption.disabled = false
form.deleteCaption.disabled = true
}// housekeeping functions
function updateRowCounters(form) {
var sel1 = form.insertIndex
var sel2 = form.deleteIndex
sel1.options.length = 0
sel2.options.length = 0
for (var i = 0; i < theTableBody.rows.length; i++) {
sel1.options[i] = new Option(i, i)
sel2.options[i] = new Option(i, i)
}
form.removeRowBtn.disabled = (i==0)
}function clearBGColors() {
for (var i = 0; i < theTableBody.rows.length; i++) {
for (var j = 0; j < theTableBody.rows[i].cells.length; j++) {
theTableBody.rows[i].cells[j].style.backgroundColor = ""
}
}
}</SCRIPT>
</HEAD><BODY onLoad="init()">
<H1>Modifying Tables</H1>
<HR>
<FORM NAME="controls">
<FIELDSET>
<LEGEND>Add/Remove Rows</LEGEND>
<TABLE WIDTH="100%" CELLSPACING=20><TR>
<TD><INPUT TYPE="button" VALUE="Append 1 Row" onClick="appendRow(this.form)"></TD>
<TD><INPUT TYPE="button" VALUE="Insert 1 Row" onClick="addRow(this.form)"> at index:
<SELECT NAME="insertIndex">
<OPTION VALUE="0">0
</SELECT></TD>
<TD><INPUT TYPE="button" NAME="removeRowBtn" VALUE="Delete 1 Row" DISABLED onClick="removeRow(this.form)"> at index:
<SELECT NAME="deleteIndex">
<OPTION VALUE="0">0
</SELECT></TD>
</TR>
</TABLE>
</FIELDSET>
<FIELDSET>
<LEGEND>Add/Remove THEAD and TFOOT</LEGEND>
<TABLE WIDTH="100%" CELLSPACING=20><TR>
<TD><INPUT TYPE="button" NAME="addTHEAD" VALUE="Insert THEAD" onClick="insertTHEAD(this.form)"><BR>
<INPUT TYPE="button" NAME="deleteTHEAD" VALUE="Remove THEAD" DISABLED onClick="removeTHEAD(this.form)">
</TD>
<TD><INPUT TYPE="button" NAME="addTFOOT" VALUE="Insert TFOOT" onClick="insertTFOOT(this.form)"><BR>
<INPUT TYPE="button" NAME="deleteTFOOT" VALUE="Remove TFOOT" DISABLED onClick="removeTFOOT(this.form)">
</TD>
</TR>
</TABLE>
</FIELDSET>
<FIELDSET>
<LEGEND>Add/Remove Caption</LEGEND>
<TABLE WIDTH="100%" CELLSPACING=20><TR>
<TD><INPUT TYPE="button" NAME="addCaption" VALUE="Add Caption" onClick="insertCaption(this.form)"></TD>
<TD>Text: <INPUT TYPE="text" NAME="captionText" SIZE=40 VALUE="Sample Caption">
<TD><INPUT TYPE="button" NAME="deleteCaption" VALUE="Delete Caption" DISABLED onClick="removeCaption(this.form)"></TD>
</TR>
</TABLE>
</FIELDSET>
</FORM>
<HR>
<TABLE ID="myTABLE" CELLPADDING=10 BORDER=1>
<TBODY>
</TABLE>
</BODY>
</HTML>