How do I get the page slug in WordPress using the get_post_field function in WordPress?

 <?php
// Get the current post or page's slug
$slug = get_post_field( 'post_name', get_post() );
echo $slug;

// Get slug for a post or page by ID
$post_id = 1;
echo get_post_field( 'post_name', $post_id );