Handling AJAX Form Submission in PHP with Improved User Experience
I'm trying to configure I'm optimizing some code but I tried several approaches but none seem to work. I'm working on a personal project and Building an application that relies heavily on user interactions, I need to streamline how form submissions are processed to enhance the overall experience... Currently, I’m using jQuery to handle the AJAX calls, but I find that the loading indicators aren't displaying as expected, and users sometimes think the application has stalled. Here's a snippet of what I have so far: ```javascript $("#myForm").on('submit', function(e) { e.preventDefault(); $('#loadingIndicator').show(); // Show loading indicator $.ajax({ type: 'POST', url: 'submit.php', data: $(this).serialize(), success: function(response) { $('#loadingIndicator').hide(); // Hide loading on success $('#result').html(response); // Display server response }, error: function() { $('#loadingIndicator').hide(); // Hide on error alert('An error occurred. Please try again.'); } }); }); ``` The problem arises when the loading indicator does not always appear promptly. I’ve tried increasing the delay before the AJAX call starts, but this hasn’t resolved the issue. Additionally, I’m looking to implement a better feedback mechanism for the users, especially when validating inputs before submission. In my PHP backend (`submit.php`), I'm performing some checks before processing the data. Here’s the relevant part of that code: ```php if ($_SERVER['REQUEST_METHOD'] === 'POST') { $name = $_POST['name']; if (empty($name)) { echo 'Name is required.'; exit; } // Process the input... echo 'Submission successful!'; } ``` It seems users might not notice the validation feedback because it only appears after submission. I want to implement client-side validation to catch errors earlier in the process. Using HTML5 validation seems like an easy way to start, but I am considering incorporating a library like Parsley.js for a more robust solution. What would be the best approach to ensure that the loading indicators work properly and to implement client-side validations without making the experience feel janky or unresponsive? Any examples or insights would be greatly appreciated! Any ideas what could be causing this? Am I missing something obvious? Any pointers in the right direction? I'm developing on Ubuntu 20.04 with Php. Any examples would be super helpful.