ajax_forms_test_advanced_commands_prepend_callback in modules/simpletest/tests/ajax_forms_test.module

Ajax callback for 'prepend'.

ajax_prepare_response in includes/ajax.inc

Converts the return value of a page callback into an Ajax commands array.

ajax_render in includes/ajax.inc

Renders a commands array into JSON.

config_export_single_form_update_type in modules/config/config.admin.inc

Handles switching the configuration type selector.

file_ajax_upload in modules/file/file.module

Ajax callback: Processes file uploads and deletions.

filter_format_editor_dialog_save in modules/filter/filter.pages.inc

Form AJAX callback. Sends the save editor AJAX command and closes the dialog.

_filter_image_library_ajax in modules/filter/filter.pages.inc

Render the image library.

hook_ajax_render_alter in modules/system/system.api.php

Alter the commands that are sent to the user through the Ajax framework.