How to Delete Record from MySQL Table with AJAX

There are many things you can do with AJAX to improve the user experience, for example, Add, edit or delete the record and update layout without reloading the page.

With only PHP you can easily delete records but require to submit the page or send value by URL and according to it delete a record.

This works and removes the record but it reloads the page every time.

You can do this with jQuery AJAX where you need to pass the record id from AJAX which needs to delete.

In the demonstration, I am creating the HTML table which shows the list of records with a delete button. When the button gets clicked then remove the record and also remove HTML table row with fadeOut() effect.

How to Delete Record from MySQL Table with AJAX


Contents

  1. Table structure
  2. Configuration
  3. HTML
  4. PHP
  5. jQuery
  6. Demo
  7. Conclusion

1. Table structure

I am using posts Table.

CREATE TABLE `posts` (
  `id` int(11) NOT NULL PRIMARY KEY AUTO_INCREMENT,
  `title` varchar(100) NOT NULL,
  `content` text NOT NULL,
  `link` varchar(255) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

2. Configuration

Create a config.php file for database connection.

Completed Code

<?php

$host = "localhost"; /* Host name */
$user = "root"; /* User */
$password = ""; /* Password */
$dbname = "tutorial"; /* Database name */

$con = mysqli_connect($host, $user, $password,$dbname);
// Check connection
if (!$con) {
  die("Connection failed: " . mysqli_connect_error());
}

3. HTML

List records from posts table in the <table >.

Here, I add the <span class='delete'> for deleting the record and use the record id to define value of id attribute.

Completed Code

<div class='container'>
 <table border='1' >
  <tr style='background: whitesmoke;'>
   <th>S.no</th>
   <th>Title</th>
   <th>Operation</th>
  </tr>

  <?php 
  $query = "SELECT * FROM posts";
  $result = mysqli_query($con,$query);

  $count = 1;
  while($row = mysqli_fetch_array($result) ){
    $id = $row['id'];
    $title = $row['title'];
    $link = $row['link'];

  ?>
    <tr>
     <td align='center'><?php echo $count; ?></td>
     <td><a href='<?php echo $link; ?>'><?php echo $title; ?></a></td>
     <td align='center'>
       <span class='delete' id='del_<?php echo $id; ?>'>Delete</span>
     </td>
    </tr>
  <?php
   $count++;
  }
 ?>
 </table>
</div>

4. PHP

Create a remove.php file.

Read POST id.

Check if a record exists or not in the posts table. If exists then execute Delete query on the id.

echo 1 for return.

If not deleted then echo 0 for return.

Completed Code

<?php 
include "config.php";

$id = $_POST['id'];

if($id > 0){

  // Check record exists
  $checkRecord = mysqli_query($con,"SELECT * FROM posts WHERE id=".$id);
  $totalrows = mysqli_num_rows($checkRecord);

  if($totalrows > 0){
    // Delete record
    $query = "DELETE FROM posts WHERE id=".$id;
    mysqli_query($con,$query);
    echo 1;
    exit;
  }
}

echo 0;
exit;

5. jQuery

Define click event on delete class.

Get delete id by splitting the element id and sending this in AJAX request. On AJAX successfully callback check response.

If response == 1 then remove a row using remove() and use fadeOut() effect to add some delay.

If response != 1 then alert('Invalid ID.');.

Completed Code

$(document).ready(function(){

 // Delete 
 $('.delete').click(function(){
   var el = this;
   var id = this.id;
   var splitid = id.split("_");

   // Delete id
   var deleteid = splitid[1];
 
   // AJAX Request
   $.ajax({
     url: 'remove.php',
     type: 'POST',
     data: { id:deleteid },
     success: function(response){

       if(response == 1){
	 // Remove row from HTML Table
	 $(el).closest('tr').css('background','tomato');
	 $(el).closest('tr').fadeOut(800,function(){
	    $(this).remove();
	 });
      }else{
	 alert('Invalid ID.');
      }

    }
   });

 });

});

6. Demo

Click on the Delete.


7. Conclusion

In this post, I explained how you can use AJAX to delete existing records from MySQL Table. I used it with HTML table in the demonstration you can also use it with <div>, <ul>, etc. elements.

If you found this tutorial helpful then don't forget to share.

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16 Comments

  1. Darren said:

    Thanks for creating this post. And, not making it too long 🙂 I don’t write jquery often enough to not usually need a reference to see how the syntax should go. This is a great solution for exactly what I needed to do. It’s nice to find something relevant outside of Stack Overflow.

    January 10, 2018
    Reply
  2. Liam said:

    I can’t make … Delete clickable. Can you please explain how you make it possible?

    January 14, 2018
    Reply
    • Yogesh Singh said:

      Hi Liam,
      Here, is the short explain –
      On the delete button, I use the posts table “id” value to set id attribute e.g. del_1, del_2,etc.
      On the button click split the id by “_” to get to delete record id (deleteid = splitid[1]) and pass in the $.ajax request. In PHP file execute DELETE query on the POST id.

      January 15, 2018
      Reply
  3. Panther said:

    thanks a lot.

    January 27, 2018
    Reply
  4. rishikesh said:

    Hey, I can delete the row from html table but not from mysql DB. What do i do ?

    February 18, 2018
    Reply
    • Yogesh Singh said:

      Hi Rishikesh,
      If you are properly removing a row from HTML table means your AJAX request working fine.

      Check your AJAX php file.

      February 18, 2018
      Reply
      • jerrad said:

        I have the same issue. Remove.php is set up properly and I copied your ajax code exactly but i’m not getting the $id variable through post and it isn’t removing the row from my database. Can you help?

        April 19, 2018
        Reply
  5. Orpee said:

    Thanks for this tutorial. If I want to delete from multiple tables, will the other delete queries go to remove.php? And how, please?

    May 16, 2018
    Reply
    • Yogesh Singh said:

      Yes, all delete queries will be defined in remove.php file.

      May 16, 2018
      Reply
  6. Hal said:

    Thanks for this amazing tutorial.

    I would like to clear one thing though, while deleting works perfectly, I was wondering if we could make the Sl no change as well instantly. It takes a refresh to update Sl no.

    June 12, 2018
    Reply
    • Yogesh Singh said:

      To update the numbering of S.no after removing record you can either send AJAX request to fetch all records and update the table or loop on the table row using jQuery to update the S.no column value.

      June 12, 2018
      Reply
  7. Sabe said:

    I tried incorporating this code to my project but It is not goin well for me. I am new to Jquery, that’s probably the reason why

    November 22, 2018
    Reply

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