Pass Data To Controller Through Ajax In Code Igniter

i am beginner in a code igniter and jquery. i have a textbox in which if user type some thing it displays the data in tooltip from the database.. here in my situation what i want

Solution 1:

A useful way to manipulate data is to use json in your datatypes:

functiongetResult(billno){
     var baseurl = $('.hiddenUrl').val();
     $('.checkbillno').addClass('preloader');
     $.ajax({
          url : baseurl + 'Controller/checkBillNo/' + billno,
          cache : false,
          dataType: 'json',
          success : function(response){
               $('.checkbillno').attr('data-content', response.toolTip);
          }
     })
}

Now your js function expects a json encoded array as a response, so in your controller you could do something like the below:

$forToolTip = '';
foreach($query->result() as$row){
    $forToolTip .= $row->key;
}

$result['toolTip'] = $forToolTip;
echo json_encode($result);

Alter variables to match your concept