unable to open modal pop up window

i want to open modal window using php codeigniter. but the error occured.

Code:

<td>

<button class="btn btn-warning" onclick="edit_book(<?php echo $book['appno'];?>)"><i class="glyphicon glyphicon-pencil"></i></button> </td>

Uncaught ReferenceError: app005 is not defined

   at HTMLButtonElement.onclick (v_dashboard:190

@kvanaraj,

The error is straight forward. What value is $book['appno'] returning? Does your modal id have the same name?

@kvanaraj,

The error is straight forward.  What value is $book['appno'] returning?  Does your modal id have the same name?

foreach($books as $book){
        
          ?>
     <tr>
              
             <?php   echo '<td align="center">'.$sno++.'</td>';?>
                <td><?php echo $book['dai'];?></td>
                <td><?php echo $book['appno'];?></td>
<td>
<button class="btn btn-warning" onclick="edit_book(<?php echo $book['appno'];?>)"><i class="glyphicon glyphicon-pencil"></i></button>



</td>

What does the edit_book() javascript function look like in your code?

What does the edit_book() javascript function look like in your code?

Exactly, this is a JavaScript question. It has nothing to do with CodeIgniter or PHP.