wc_ajax_(action) │ action-hook │ WC 1.0

Usage

add_action( 'wc_ajax_(action)', 'wp_kama_wc_ajax_action' );

/**
 * Function for `wc_ajax_(action)` action-hook.
 * 
 * @return void
 */
function wp_kama_wc_ajax_action(){

	// action...
}

Where the hook is called

do_action( 'wc_ajax_' . $action );

Where the hook is used in WooCommerce

add_action( 'wc_ajax_update_order_review', array( __CLASS__, 'update_geolocation_hash' ), 5 );