functions.php

		$jq_integrity = 'sha256-xNzN2a4ltkB44Mc/Jz3pT4iU1cmeR0FkXs4pru/JxaQ=';
		$jq_crossorigin = 'anonymous';
		$jq_cdn = 'https://code.jquery.com/jquery-3.5.0.min.js';
		$jq_version = '3.5.0';

		if(! is_admin()){

			function add_cdn_attrs( $tag, $handle, $src ) {

				global $jq_integrity, $jq_crossorigin;

				if ( 'jquery' === $handle ) {
					$tag = '<script src="' . esc_url( $src ) . '" integrity="' . $jq_integrity . '" crossorigin="' . $jq_crossorigin . '"></script>'."\n";
				}

				return $tag;
			}


			function replace_core_jquery() {

				global $jq_cdn, $jq_version;

				wp_deregister_script( 'jquery' );
				wp_register_script( 'jquery', $jq_cdn, array(), $jq_version );

			}

			add_filter( 'script_loader_tag', 'add_cdn_attrs', 10, 3 );
			add_action( 'wp_enqueue_scripts', 'replace_core_jquery' );

		}