When invoking functions that have asynchronous behavior We must provide a callback function to capture the desired result. This is especially important with AJAX in the browser because when a remote request is made, it is indeterminate when the response will be received.

Below an example of making an AJAX call and alerting the response (or error):

Code:

$.ajax({

url: 'pcdsEmpRecords.php',

success: function(response) {

alert(response);

},

error: function(xhr) {

alert('Error! Status = ' + xhr.status);

}

});