How to Display AJAX File Upload Progress in a Progress Element?

How to Display AJAX File Upload Progress in a Progress Element

When uploading a file via an AJAX script, you may encounter the need to display its progress to the user. Particularly when the upload process takes an extended period. To effectively display this progress, it is recommended to update the HTML progress element on the frontend.

SOLUTION:

To accomplish this, the progress property of the executing class can be utilized. This property should regularly update during the upload process, providing the current progress as a percentage (from 1-100). The get_progress() method can also be employed to retrieve this progress.

To display the progress on the frontend, it is important to establish a mechanism to access the progress property of the executing class from the frontend. The following code snippet provides an example of how this can be achieved using JavaScript:

function updateProgress() {
  // Send an AJAX request to retrieve the current progress from the PHP script
  $.ajax({
    url: "php/progress.php",
    success: function(response) {
      // Update the progress element with the received progress percentage
      $("#progress").val(response);
    }
  });
  
  // Recursively call this function to continuously update the progress
  setTimeout(updateProgress, 100);
}

$(document).ready(function() {
  updateProgress();
});

In this code, the updateProgress() function sends an AJAX request to the PHP script, which returns the current progress as a response. The response is then used to update the progress element with the ID "progress" on the frontend. The function is also set to be recursively called every 100 milliseconds to continuously update the progress. This creates a real-time display of the upload progress for the user.

By implementing this solution, you can effectively show the upload progress in the progress element on the frontend. This enhances the user experience by providing visual feedback on the status of the upload process.

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