I have a table with information. The first column of the table have checkboxes. I can add/delete rows with a button by checking the checkboxes. The problem I have now is how do I select or deselect all the checkboxes using the checkbox on the header.
Here is my code:
<HTML>
<HEAD>
<TITLE> Add/Remove dynamic rows in HTML table </TITLE>
<SCRIPT language="javascript">
function addRow(tableID) {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
var row = table.insertRow(rowCount);
var cell1 = row.insertCell(0);
var element1 = document.createElement("input");
element1.type = "checkbox";
element1.name="chkbox[]";
cell1.appendChild(element1);
var cell2 = row.insertCell(1);
cell2.innerHTML = rowCount;
var cell3 = row.insertCell(2);
cell3.innerHTML = rowCount;
var cell4 = row.insertCell(3);
cell4.innerHTML = rowCount;
var cell5 = row.insertCell(4);
cell5.innerHTML = rowCount;
var cell6 = row.insertCell(5);
cell6.innerHTML = rowCount;
}
function deleteRow(tableID) {
try {
var table = document.getElementById(tableID);
var rowCount = table.rows.length;
for(var i=1; i<rowCount; i++) {
var row = table.rows[i];
var chkbox = row.cells[0].childNodes[0];
if(null != chkbox && true == chkbox.checked) {
table.deleteRow(i);
rowCount--;
i--;
}
}
}catch(e) {
alert(e);
}
}
function checkAll(formname, checktoggle)
{
var checkboxes = new Array();
checkboxes = document[formname].getElementsByTagName('input');
for (var i=0; i<checkboxes.length; i++) {
if (checkboxes[i].type == 'checkbox') {
checkboxes[i].checked = checktoggle;
}
}
}
</SCRIPT>
</HEAD>
<BODY>
<INPUT type="button" value="Add Row" onclick="addRow('dataTable')" />
<INPUT type="button" value="Delete Row" onclick="deleteRow('dataTable')" />
<TABLE id="dataTable" border="1">
<tr>
<th><INPUT type="checkbox" name="chk[]"/></th>
<th>Make</th>
<th>Model</th>
<th>Description</th>
<th>Start Year</th>
<th>End Year</th>
</tr>
</TABLE>
</BODY>
</HTML>
