莫代尔不会弹出

Question

如果点击：url：user_cart.php？ （不会弹出）如果我添加＃url：user_cart.php？＃（它会弹出）。我不知道为什么会发生这种情况，因为我的一些页面是这样的，并且它起作用了

                <tbody>
                    <?php

                    $dbhost = 'localhost';
                    $dbuser = 'root';
                    $dbpass = '';
                    $dbname = 'tradingdb';

                      $connection = mysql_connect($dbhost,$dbuser,$dbpass);
                        if (!$connection) {
                          die("Database connection failed: " . mysql_error());
                        }

                      $db_select = mysql_select_db($dbname,$connection);
                        if (!$db_select) {
                          die("Database selection failed: " . mysql_error());
                        }

                          $query="select user_add_cart.id,user_add_cart.prod_cart_quantity,user_add_cart.total,product.prod_name,product.price from user_add_cart inner join product on product.id = user_add_cart.prod_id"; 

                          $result = mysql_query($query);
                          while ($row = mysql_fetch_array($result) ) {
                          ?>
                    <tr>
                        <td hidden><?php echo $row['id']; ?></td>
                        <td><a class='remove' href='#'><fa class='fa fa-close'></fa></a></td>
                        <td><a href='#'><img src='img/man/polo-shirt-1.png' alt='img'></a></td>
                        <td><a class='aa-cart-title' href='#'><?php echo $row["prod_name"];?></a></td>
                        <td><?php echo $row['price']?></td>
                        <td><a class='aa-cart-quantity' id="quant_value" name='quant'><?php echo $row['prod_cart_quantity']; ?></a></td>
                        <td id="totalprice"><?php echo $row['total'];?></td>
                            <td>
                                <div class="panel-heading">
                                  <button class='btn btn-success' data-toggle='modal' href='#addquantity'>Edit</button> <!-- This is the button needs to be clicked to make modal pop up-->
                                </div>
                            </td>
                  </tr>
                            <?php 
                          }   
                          ?>
                </tbody>