WordPress at a glance
function is not described

wp_page_reload_on_back_button_js() WP 4.6.0

Outputs JS that reloads the page if the user navigated to it with the Back or Forward button.

Used on the Edit Post and Add New Post screens. Needed to ensure the page is not loaded from browser cache, so the post title and editor content are the last saved versions. Ideally this script should run first in the head.

No Hooks.

Return

Null. Nothing.

Usage

wp_page_reload_on_back_button_js();

Changelog

Since 4.6.0 Introduced.

Code of wp page reload on back button js: wp-admin/includes/misc.php WP 5.2.2

<?php
function wp_page_reload_on_back_button_js() {
	?>
	<script>
		if ( typeof performance !== 'undefined' && performance.navigation && performance.navigation.type === 2 ) {
			document.location.reload( true );
		}
	</script>
	<?php
}