Can I call jquery.ajax() with some other function? - php

Question

I am using the jQuery DataTables plugin, it has one event, that on click of button we can add new row in table.
The jQuery code is as below:
$(document).ready(function() {
var t = $('#example').DataTable();
var counter = 1;
$('#addRow').on( 'click', function () {
t.row.add( [
counter,
'<select id="k'+counter+'" name="itemname'+counter+'" ><option>-------</option></select>' ,
'<input id="itemrate" name="itemqty'+counter+'" placeholder="Quantity" type="text">',
'<input id="itemrate" name="itemrate'+counter+'" placeholder="Rate" type="text">',
'<input id="totalamt" name="totalamt'+counter+'" placeholder="Total Amount" type="text">'
] ).draw();
counter++;
});
});
I want to fill data fetched from a MySQL database using jQuery .ajax(), and my code is as follows:
jQuery(document).ready(function(){
jQuery('#k'+counter).click(function(){
jQuery.ajax({
url: 'getData.php',
type:'POST',
data:'form_data='+val,
success:function(results){
jQuery('#k'+counter).html(results);
}
});
});
});
The code for getdata.php is as follows:
<?php
mysql_connect('localhost','root','');
mysql_select_db('eroyalsum');
$sql = "SELECT ITEMCODE,ITEMNAME FROM itemmaster1";
$result = mysql_query($sql);
while($row = mysql_fetch_row($result))
{
echo '<option value="'.$row[0].'" >'.$row[1].'</option>';
}
?>
Finally, my problem is when I write it as separate function, it just works only once. When I add other row it does not work, and when i write jQuery's .ajax() in one function it does not work...

Answer 1

try changing you selector from:
jQuery('#k'+counter).click(function(){
…
to
jQuery(document).on("change", "select[id^='k']", function(){
...

Answer 2

The issue is the event binding.
When you bind the event to the #k elements, the new item doesn't automatically get the event bound to it.
You can use stuff like :
$('body').on('click','.new_elements',function(){ //dostuff});
you can read more about it here
Event binding on dynamically created elements?