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'Copy to the clipboard' button works only on the first page of DataTables

I have a data table in which there are columns and rows and one of them is a copy button which onclick() initiates a copy function and copies a particular row to the clipboard, it works normally on the first page but when I use the search or the pagination it does not work and the button does not initiate the javascript function.
I searched and found in StackOverflow that I need to reinitiate the data table, which I tried but it gives an error
DataTables warning: table id=datatable - Cannot reinitialise DataTable. For more information about this error, please see http://datatables.net/tn/3
i have used the modified code that I tried after I searched StackOverflow after which it gives an error
DataTables warning: table id=datatable - Cannot reinitialise DataTable. For more information about this error, please see http://datatables.net/tn/3
('#datatable').dataTable({ "fnDrawCallback": function(oSettings) {
//code
}});
});
<table id="datatable" class="table table-striped table-bordered" class="dass">
<thead>
<tr>
<th>No.</th>
<th>Student ID</th>
<th>Reference</th>
<th>First Name</th>
<th>Last Name</th>
<th>Copy</th>
</tr>
</thead>
<tbody>
<?php
$numm=1;
$stmt = $DB_con->prepare("SELECT * FROM asd);
$stmt->execute();
while($row = $stmt->fetch(PDO::FETCH_ASSOC))
{ ?>
<tr>
<td>
<?php echo $row['id']; ?>
</td>
<td>
<?php echo strtoupper($row['stid']); ?>
</td>
<td>
<?php echo $row['ref']; ?>
</td>
<td>
<?php echo $row['fname']; ?>
</td>
<td>
<?php echo $row['lname']; ?>
</td>
<td>
<button onclick="textToClipboard<?php echo $numm;?>()">Copy</button>
</td>
<th>
<script>
function textToClipboard <?php echo $numm;?> () {
var space = " ";
var x = document.getElementById('datatable').rows[<?php echo $numm;>].cells[1].innerHTML;
var y = document.getElementById('datatable').rows[<?php echo $numm;?>].cells[2].innerHTML;
var z = document.getElementById('datatable').rows[<?php echo $numm;?>].cells[3].innerHTML;
var text = x.concat(space, y, space, z, space, q, space, w);
var dummy = document.createElement("textarea");
document.body.appendChild(dummy);
dummy.value = text;
dummy.select();
document.execCommand("copy");
document.body.removeChild(dummy);
}
</script>
</th>
</tr>
<?php $numm++;
} ?>
</tbody>
How can I bind it with the data table?

It's not really a good practice to redefine a function again and again in a loop like this - that is what's parameters are for. I can't test this code, but here's an approach i would recommend:
<script>
function textToClipboard(numm) {
var space = " ";
var x = document.getElementById('datatable').rows[numm].cells[1].innerHTML;
var y = document.getElementById('datatable').rows[numm].cells[2].innerHTML;
var z = document.getElementById('datatable').rows[numm].cells[3].innerHTML;
var text = x.concat(space,y,space, z,space, q,space, w);
var dummy = document.createElement("textarea");
document.body.appendChild(dummy);
dummy.value = text;
dummy.select();
document.execCommand("copy");
document.body.removeChild(dummy);
}
</script>
<table id="datatable" class="table table-striped table-bordered"
class="dass">
<thead>
<tr>
<th>No.</th>
<th>Student ID</th>
<th>Reference</th>
<th>First Name</th>
<th>Last Name</th>
<th>Copy</th>
</tr>
</thead>
<tbody>
<?php
$numm=1;
$stmt = $DB_con->prepare("SELECT * FROM asd");
$stmt->execute();
while($row=$stmt->fetch(PDO::FETCH_ASSOC))
{
?>
<tr><td><?php echo $row['id']; ?></td>
<td><?php echo strtoupper($row['stid']); ?>
</td>
<td><?php echo $row['ref']; ?></td>
<td><?php echo $row['fname']; ?></td>
<td><?php echo $row['lname']; ?></td>
<td><button onclick="textToClipboard(<?php echo $numm;?>)">>Copy</button></td>
</tr>
<?php
$numm++;
} ?></tbody>
So define one parametered function first, and then call that later.
Furthermore, I'm unsure on how datatables handles selecting .rows[numm] after you search or use the pagination function. Therefore an even safer solution would involve passing all your required parameters in the function call, something like this:
onClick="textToClipboard($row['ref'], $row['fname'], $row['lname'])"
But this relies entirely on what you're trying to achieve here.

To avoid Cannot reinitialise DataTable Warning, just add
"destroy": true,
while initialising it. That will reinitialise a datatable again when you call it second time.
Read more:
https://datatables.net/reference/option/destroy
https://datatables.net/reference/api/destroy() -- destroy method

onclick() does not work in a table

i created an appointments table and added two links to accept and reject appointments. the links are displayed in every row of the table but when i click it the text accept & reject are only displayed in the first row & I also need to know how to insert the text that appears after the button click into the db i would request someone to pls provide me some help thanks!
<form method="post" action="delete.php" >
<table cellpadding="0" cellspacing="0" border="0" class="table table-condensed" id="example">
<thead>
<tr>
<th>appoinment ID</th>
<th>Date</th>
<th>time</th>
<th>teacher</th>
<th>parent</th>
<th> accept/reject </th>
<th>label</th>
</tr>
</thead>
<tbody>
<?php
$query=mysqli_query($conn, "select * from `app` left join `par` on par.par_id=app.par_id
left join `tea` on tea.tea_id=app.tea_id
ORDER BY app_id DESC");
if($query === false)
{
throw new Exception(mysql_error($conn));
}
while($row=mysqli_fetch_array($query))
{
$ann_id=$row['app_id'];
$date=$row['date'];
$msg=$row['time'];
$username = $row['username'];
$username = $row['p_username'];
?>
<tr>
<td><?php echo $row['app_id'] ?></td>
<td> <?php echo date('j/m/y',strtotime($row['date'])); ?></td>
<td><?php echo $row['time'] ?></td>
<td><?php echo $row['p_username'] ?></td>
<td><?php echo $row['username'] ?></td>
<td> reject
accept
</td>
<td>
<div id="chgtext">PENDING</div>
</td>
</tr>
<?php
}
?>
</tbody>
</table>
</div>
</form>

In jQuery it would look like this:
<td>
reject
accept
</td>
<td>
<div class="chgtext">PENDING</div>
</td>
Then, before closing body tag:
<script>
$(document).ready(function(){
$('.reject').on('click', function(){
var row = $(this).closest('tr'); //find the row the link is in
var thediv = row.find('.chgtext') //find the correct div within that tr
$(thediv).text('reject');
});
$('.accept').on('click', function(){
var row = $(this).closest('tr'); //find the row the link is in
var thediv = row.find('.chgtext') //find the correct div within that tr
$(thediv).text('accept');
});
});
</script>
You can make the code shorter, but I wanted to show you how it works step by step.

Save updated values to database and show them in html table

I have a table like the following:
<script>
$("#edit").hide(); // Hide the edit table first
$("#update").click(function() {
$("#edit").toggle();
$("#shown").toggle();
// If we are going from edit table to shown table
if($("#shown").is(":visible")) {
var vouchertype = $('input[name="vouchertype[]"]').map(function(){return $(this).val();}).get();
var mode= $('select[name="mode[]"]').map(function(){return $(this).val();}).get();
// Then add it to the shown table
var baseurl='<?php echo base_url()."index.php/account/insert_voucher";?>';
$.ajax({
type: "POST",
url: baseurl,
data: $('#edit *').serialize() ,
cache: false,
success: function(html) {
alert(html);
}
});
$(this).val("Edit");
}
else $(this).val("Update");
});
</script>
<table width="62%" height="70" border="1" cellpadding="0" cellspacing="0" class="tbl_grid" id="shown">
<?php if(count($voucher_info) > 0 ){ ?>
<tr class="bgcolor_02">
<td width="22%" height="25" align="center" class="admin" >S.no</td>
<td width="37%" align="center" class="admin">Voucher Type</td>
<td width="37%" align="center" class="admin">Voucher Mode</td>
</tr>
<?php
$rownum = 1;
foreach ($voucher_info as $eachrecord){
$zibracolor = ($rownum%2==0)?"even":"odd";
?>
<tr align="center" class="narmal">
<td height="25"><?php echo $eachrecord->voucher_id; ?></td>
<td><?php echo $eachrecord->voucher_type; ?></td>
<td><?php echo ucwords($eachrecord->voucher_mode); ?></td>
</tr>
<?php }
}
else {
echo "<tr class='bgcolor_02'>";
echo "<td align='center'><strong>No records found</strong></td>";
echo "</tr>";
}
?>
</table>
<table width="62%" height="70" border="1" cellpadding="0" cellspacing="0"
id="edit">
<?php if(count($voucher_info) > 0 ){ ?>
<tr class="bgcolor_02">
<td width="27%" align="center" class="admin" >S.no</td>
<td width="37%" align="center" class="admin" >Voucher Type</td>
<td width="47%" align="center" class="admin" >Voucher Mode</td>
<!-- <td width="41%" align="center" class="narmal"> <strong>Actions</strong></td>-->
</tr>
<?php
$rownum = 1;
foreach ($voucher_info as $eachrecord){
$zibracolor = ($rownum%2==0)?"even":"odd";
?>
<tr align="center" class="narmal">
<td height="25"><?php echo $eachrecord->voucher_id ; ?><input type="hidden" name="voucher_id[]" value="<?php echo $eachrecord->voucher_id; ?>" /></td>
<td><input name="vouchertype[]" type="text" value="<?php echo $eachrecord->voucher_type; ?>" /></td>
<td><select name="mode[]" >
<option value="paidin" <?php if($eachrecord->voucher_mode=='paidin') { ?> selected="selected" <?php } ?>>Paid In</option>
<option value="paidout" <?php if($eachrecord->voucher_mode=='paidout') { ?> selected="selected" <?php } ?>>Paid Out</option>
</select></td>
</tr>
<?php } }
else {
echo "<tr class='bgcolor_02'>";
echo "<td align='center'><strong>No records found</strong></td>";
echo "</tr>";
}
?>
</table>
</td>
</tr>
<input id="update" type="submit" name="submit" value="Edit"/
In first table I am displaying values from database. But when user click on edit button below the table, Then that table values should be editable for user. I have succeeded in making editable fields but again when user click on submit then updated values are not displaying in first table. I know it's possible with jQuery or JavaScript. When I alert(newsales), the alert is undefined.

An easy way to handle this would be have two separate tables, and toggle between them when you edit a table. So for example we have a table that shows our normal data called shown and one with the input and select for a user to enter data called edit. These tables will share the same button, and when clicked it will toggle between the tables, making it look like it's switching between edit and show mode. This way we can just copy the values from the edit table to the text in the shown table. Here is an example:
$("#edit").hide(); // Hide the edit table first
$("#update").click(function() {
$("#edit").toggle();
$("#shown").toggle();
// If we are going from edit table to shown table
if($("#shown").is(":visible")) {
// Get the data from the edit table
var newSales = $("#edit tr:nth-child(1) td input[name='vouchertype']").val();
var newPay = $("#edit tr:nth-child(1) td select[name='mode']").val();
var newTax = $("#edit tr:nth-child(2) td select[name='tax']").val();
// Then add it to the shown table
$("#shown tr:nth-child(1) td:nth-child(2)").text(newSales);
$("#shown tr:nth-child(1) td:nth-child(3)").text(newPay);
$("#shown tr:nth-child(2) td:nth-child(1)").text(newTax);
$(this).val("Edit");
}
else $(this).val("Update");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<table id="shown">
<tr>
<td>Sr no</td><td>Sales</td><td>Paid in</td>
</tr>
<tr><td>Taxed</td></tr>
</table>
<table id="edit">
<tr>
<td>Sr no</td><td><input type="text" name="vouchertype" value="Sales" /></td>
<td>
<select name="mode">
<option value="paidin">Paidin</option>
<option value="paidout">Paidout</option>
</select>
</td>
</tr>
<tr>
<td>
<select name="tax">
<option value="Taxed">Taxed</option>
<option value="Not Taxed">Not Taxed</option>
</select>
</td>
</tr>
</table>
<input id="update" type="submit" name="submit" value="Edit"/>
Notice: This is an answer to the original question, which is quite different then the new question added in as an edit.

How to get value table row value using jquery/ajax

<?php
include "config.php";
// Fetch the data
$con = mysql_query("select * from product");
?>
<div style=" height:250px; overflow:auto;">
<table class="table table-striped table-bordered dTableR" id="ajxtable">
<tr>
<th>Jobno</th>
<th>Product</th>
<th>Qty</th>
<th>Designed by</th>
<th>Action</th>
</tr>
<?php
while ($row = mysql_fetch_array($con)) {
$id = $row['id'];
$pcode = $row['pcode'];
$lproduct = $row['lproduct'];
$mrprate = $row['mrprate'];
?>
<tr>
<td><?php echo $id; ?></td>
<td><?php echo $lproduct; ?></td>
<td><?php echo $mrprate; ?></td>
<td><?php echo "admin"; ?></td>
<td><input type="button" id="addmorePOIbutton1" style="width:25px;" value="+" onClick=""/>
<input type="button" id="delPOIbutton1" style="width:25px;" value="-" onClick=""/></td>
</tr>
<?php
}
?>
</table>
</div>
This is ajax page. Below table is auto refreshed every 5 seconds.
My doubt is how to get that particular row value.
When i click table row + button, get these particular row values, and place to index page text box and this '+' button also hide.
Kindly suggest any jquery or ajax code for adding below code.
I am new to jquery ,,anybody help me with sample code..that would help me greately. Thanks in advance

$(document).ready(function () {
$('#yourtablename tr').click(function (event) {
alert($(this).attr('id')); //trying to alert id of the clicked row
});
});
Above code may be help you and another solution is:
$('td').click(function(){
var row_index = $(this).parent().index();
var col_index = $(this).index();
});

Javascript comparison for a table row to highlight a row in red (CakePHP)

How do I find the right approach to getting this comparison to work? I've tried all kinds of approaches. I even used ids, but they don't respond. If I do this "gumboots" string check though, it does work. "gumboots" was just a value for a product name that existed somewhere on the table. This is how I know I do not need PHP at all for this, despite the tables displayed in PHP in the Index view below. Any idea? I would appreciate it.
Here's the javascript
$('#example tbody tr td').each(function()
{
//var p_no_in_stock = parseInt($('#p_no_in_stock')).val();
//var p_reorder_quantity = parseInt($('#p_reorder_quantity')).val();
var p_no_in_stock = parseInt(document.getElementById('p_no_in_stock')).value;
var p_reorder_quantity = parseInt(document.getElementById('p_reorder_quantity')).value;
//if ($product['Product']['p_no_in_stock'].val() < $product['Product']['p_reorder_quantity'].val())
if ($(this).text() == "gumboots")
//if ($(this).p_no_in_stock < $(this).p_reorder_quantity)
{
//$("#row_" +" td").effect("highlight", {}, 1500);
$(this).closest('tr').attr('style','background-color:red');
$(this).parent().css('background-color','red');
$(this).parent().attr('style','background-color:red');
$(this).parent().addClass('highlight');
$(this).parent().css('font-weight','bold');
}
});
And this is the application in a View called Products.index
<div class="active">
<h2><?php echo __('Products'); ?></h2>
<table cellpadding="0" cellspacing="0" class="table table-striped table-bordered" id ="example">
<tr>
<th><?php echo $this->Paginator->sort('p_name', 'Name'); ?></th>
<th><?php echo $this->Paginator->sort('category_name', 'Category'); ?></th>
<th><?php echo $this->Paginator->sort('p_no_in_stock','No. in Stock'); ?></th>
<th><?php echo $this->Paginator->sort('p_reorder_quantity', 'Re-order Quantity'); ?></th>
<th class="actions"><?php echo __('Actions'); ?></th>
</tr>
<tbody>
<?php foreach ($products as $product): ?>
<tr>
<td><?php echo h($product['Product']['p_name']); ?></td>
<td> <?php echo $this->Html->link($product['Category']['category_name'],
array('controller' => 'categories', 'action' => 'view', $product['Category']['id'])); ?>
</td>
<td id = "p_no_in_stock" type ="number" ><?php echo h($product['Product']['p_no_in_stock']); ?> </td>
<td id ="p_reorder_quantity" type ="number" ><?php echo h($product['Product']['p_reorder_quantity']); ?> </td>
<td class="actions">
<?php echo $this->Html->link(__('View'), array('action' => 'view', $product['Product']['id']), array('class' => 'btn btn-mini')); ?>
<?php echo $this->Html->link(__('Edit'), array('action' => 'edit', $product['Product']['id']), array('class' => 'btn btn-mini')); ?>
<?php echo $this->Form->postLink(__('Delete'), array('action' => 'delete', $product['Product']['id']), array('class' => 'btn btn-mini'), __('Are you sure you want to delete # %s?', $product['Product']['id'])); ?>
</td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
Thanks in advance.

Is this what you're asking?
http://jsfiddle.net/SinisterSystems/z9SE7/1/
HTML:
<table>
<tr>
<td>Test</td>
<td>Test</td>
<td>Test</td>
<td>Test</td>
<td>Test</td>
</tr>
<tr>
<td>Test</td>
<td>Test</td>
<td>Test</td>
<td>Test</td>
<td>Test</td>
</tr>
</table>
CSS:
tr:hover td {
background:#F00;
}

I am sending you mine code, please modify it accordingly....
The PHP Code is as -
<?php
if($num>0)
{
echo '<table width="100%" id="dep_table" style="margin-top:10px;" cellspacing="1" cellpadding="2" border="0">';
echo '<tr bgcolor="#4682B4">';
echo '<th>Editor</th>';
echo '<th>Department Id</th>';
echo '<th>Department Name</th>';
echo '</tr>';
$i=0;
while ($row = $stmt->fetch(PDO::FETCH_ASSOC))
{
$i++;
if($i % 2 == 0)
{
$bgcolor= "#6AA2C3";
}
else
{
$bgcolor= "#A2B5CD";
}
//extract row, this will make $row['firstname'] to just $firstname only
extract($row);
//creating new table row per record
echo "<tr bgcolor='$bgcolor' id='$DeptId' name='edit_tr'>";
echo '<td id="edit"><input id="edit" type="radio" name="deptid" value="DeptId" ?></td>';
echo "<td class='format'>{$row['DeptId']}</td>";
echo "<td class='format'>{$row['DeptName']}</td>";
echo "</tr>";
}
echo "</table>";
}
echo "</div>";
The JS for corresponding code is as -
$(document).ready(function() {
row_color();
$('#dep_table tr').click(function(e) {
$(this).find('td input:radio').prop('checked', true);
/* submit_fxn();
$('#form_ndesg').submit(function(e) {
return false;
});*/
});
});
//******* 1 Div Fade In/Out effect *******
function row_color(){
$('#dep_table tr').not(':first').hover(function(){
$(this).addClass('hover');
},function(){
$(this).removeClass('hover');
});
};
The corresponding CSS code is as -
tr.hover{
background-color:#E7ECB8;
color:#990000;
}
You will move your mouse on the table, it will change the row color as well as rwo text color and when you click on particular row, it will enable the row by selecting radio button..
If this answer is helpful for you then please like it for answer, so that others can use it for reference.... Thanks and best of luck