Ways to disable an AJAX loading animation

In my current script, I am loading external content using the following code:

<script type="text/javascript">
var http_request = false;
function makePOSTRequest(url, parameters) {
    // Code for making POST request
}

function alertContents() {
    // Function to handle response from server
}

function get(obj) {
  // Function to send POST request
}
</script>

This is the dropdown menu that triggers the content retrieval:

<select name="port_post" id="port-post" onchange="get(this.parentNode);">
    <option value="1">Select one...</option>
    <option value="2">Pear</option>
    <option value="3">Pineapple</option>
</select>

Additionally, here is the div where the retrieved content is displayed:

<div id="opciones">Default content</div>

I am seeking guidance on how to stop the AJAX loading when "Select one..." is chosen in the dropdown. Specifically, I want to revert back to the default content once this option is selected.

Answer №1

If you're looking for a solution, here's some code that might help:

function obtainData(object) {
  var selectedObject = document.getElementById('port_post');
  var selectedValue = selectedObject.options[selectedObject.selectedIndex].value; //this approach is more compatible with various web browsers compared to your previous method
  if (selectedValue == 1){
      if (http_request)
         http_request.abort();
      document.getElementById('opciones').innerHTML = 'Default content';
  } else {
      var postData = "port_post=" + encodeURI( selectedValue );
      makePOSTRequest('http://www.site.com/inc/metaform.php?opcion='+ encodeURI(selectedValue ), postData);
  }
}

Answer №2

By reusing the same XMLHttpRequest object for multiple calls instead of creating a new instance each time, you run the risk of aborting the pending connection, disconnecting the event handler, and resetting the object when using http_request.open() again for subsequent calls (source).

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