Javascript

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2008-12 ( 1)
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JavaScript J#

Deleting table rows
<html>
<head>
<script type="text/javascript">
function deleteRow(i){
    document.getElementById('myTable').deleteRow(i)
}
</script>
</head>

<body>
<table id="myTable" border="1">
<tr>
<td>Row 1</td>
<td><input type="button" value="Delete" onclick="deleteRow(this.parentNode.parentNode.rowIndex)"></td>
</tr>
<tr>
<td>Row 2</td>
<td><input type="button" value="Delete" onclick="deleteRow(this.parentNode.parentNode.rowIndex)"></td>
</tr>
<tr>
<td>Row 3</td>
<td><input type="button" value="Delete" onclick="deleteRow(this.parentNode.parentNode.rowIndex)"></td>
</tr>
</table>
</body>

</html>

Adding table rows

<html>
<head>
<script type="text/javascript">
function insRow(){
    var x=document.getElementById('myTable').insertRow(2)
    var y=x.insertCell(0)
    var z=x.insertCell(1)
    y.innerHTML="NEW CELL1"
    z.innerHTML="NEW CELL2"
}
</script>
</head>

<body>
<table id="myTable" border="1">
    <tr>
        <td>d</td>
        <td>d</td>
    </tr>
    <tr>
        <td>d</td>
        <td>d</td>
    </tr>
    <tr>
        <td>Row3 cell1</td>
        <td>Row3 cell2</td>
    </tr>
    <tr>
        <td>Row4 cell1</td>
        <td>Row4 cell2</td>
    </tr>
    <tr>
        <td>Row5 cell1</td>
        <td>Row5 cell2</td>
    </tr>
</table>
<form>
<input type="button" onclick="insRow()" value="Insert row">
</form>
</body>

</html>

Inserting/Removing Row Elements
<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>

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2008-12-26 16:46
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