WordPress at a glance
function is not described

WP_Theme::get_theme_root_uri() public WP 3.4.0

Returns the URL to the directory of the theme root.

This is typically the absolute URL to wp-content/themes. This forms the basis for all other URLs returned by WP_Theme, so we pass it to the public function get_theme_root_uri() and allow it to run the 'theme_root_uri' filter.

{} It's a method of the class: WP_Theme{}

No Hooks.

Return

String. Theme root URI.

Usage

$WP_Theme = new WP_Theme();
$WP_Theme->get_theme_root_uri();

Changelog

Since 3.4.0 Introduced.

Code of WP_Theme::get_theme_root_uri() WP 5.5.1

<?php
public function get_theme_root_uri() {
	if ( ! isset( $this->theme_root_uri ) ) {
		$this->theme_root_uri = get_theme_root_uri( $this->stylesheet, $this->theme_root );
	}
	return $this->theme_root_uri;
}