Editing content with Aloha Editor and saving it to a database

edit.html

<!-- target aloha editor to edit this div -->
<div class="editable_content">
  <!-- <?php echo $content_from_database ?> -->
  <p>Hello, world!</p>
</div>

<!-- Edit away, and then users click this button to save their changes -->
<button class="update_content">Update Content</button>

<script src="http://code.jquery.com/jquery-git1.min.js"></script>
<script src="update_content.js"></script>

script.php

 // Create a script in PHP that looks for a $_POST[""] variable and saves it to a database.
// The technique used for this should be essentially the same as processing
// a contact form. Be aware that you'll need to handle updating database entries too. I'm not too sure
// about how that works in PHP - so again, see what you can dig up on the internet.
//
// example link to script: http://website.com/script.php

update_content.js

// When the update button is clicked
$(".update_content").click(function() {
  // Submit everything in the div to the php script
  $.ajax({
    url: "/script.php",
    type: "post",
    data: { updated_content: $(".editable_content").html() },
    success: itSaved,
    error: itFailed
  });
});

// Shows the appropriate message before the editable_content div
function itSaved() {
  $(".editable_content").prepend("Congratulations, the page was updated successfully.");
}

function itFailed() {
  $(".editable_content").prepend("Oops. Something went wrong with the PHP script as the page was being saved.");
}