bootstrap-jq

// Register Script
function custom_scripts() {

	wp_register_script( 'bootstrap-js', 'https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js', false, '4.1.3', true );
	wp_enqueue_script( 'bootstrap-js' );

}
add_action( 'wp_enqueue_scripts', 'custom_scripts' );