jQuery Ajax template

$('.parentElement').on('click', '.dynamicChildElement', function() {

  $.ajax('/relative_file_path.php', {
    type: "POST", // Defaults to get
    data: {
      'key' : 'value',
      'key' : 'value'
    },
    dataType: 'json', // If retrieving JSON
    contentType: 'application/json', // If retrieving JSON
    success: function(response) {
      // Success code here
    },
    error: function(request, errorType, errorMessage) {
      // Error code here
    },
    timeout: 3000, // Defaults to browser default, so best to set explicitly set it
    beforeSend: function() {
      // Good place to place loading gif / animation
    },
    complete: function() {
      // Fires after success or error
    }

  });

});