filterable portfolio with wordpress and jquery

When enqueueing scripts in a child theme directory, use get_stylesheet_directory_uri() instead of get_template_directory_uri(). In the case of a child theme, get_template_directory_uri() will return the parent theme’s directory.

function enqueue_filterable(){
    wp_register_script(
        'filterable',
        get_stylesheet_directory_uri() . '/js/filterable.js',
        array( 'jquery' )
    );
    wp_enqueue_script( 'filterable' );
}
add_action( 'wp_enqueue_scripts', 'enqueue_filterable' );