WordPress at a glance
function is not described

wp_ajax_trash_post() WP 3.1.0

Ajax handler for sending a post to the trash.

No Hooks.

Return

Nothing (null).

Usage

wp_ajax_trash_post( $action );
$action(string) (required)
Action to perform.

Code of wp ajax trash post: wp-admin/includes/ajax-actions.php VER 5.0.3

<?php
function wp_ajax_trash_post( $action ) {
	if ( empty( $action ) )
		$action = 'trash-post';
	$id = isset( $_POST['id'] ) ? (int) $_POST['id'] : 0;

	check_ajax_referer( "{$action}_$id" );
	if ( !current_user_can( 'delete_post', $id ) )
		wp_die( -1 );

	if ( !get_post( $id ) )
		wp_die( 1 );

	if ( 'trash-post' == $action )
		$done = wp_trash_post( $id );
	else
		$done = wp_untrash_post( $id );

	if ( $done )
		wp_die( 1 );

	wp_die( 0 );
}