Running Javascript in wordpress

I'm creating a word press theme , this includes a responsive jquery menu.

However, for some reason, I can't get the menu to work. In my functions.PHP file I have included the script below. Please may someone help with advice and a code snippet, i'm trying to:

1) Call Jquery

2) Run the script slimmenu.js script

<?php

function menu_function() {
    wp_enqueue_script( 'myscript', get_template_directory_uri() .   '/js/jquery.slimmenu.js', array( 'jquery'));
    }

add_action('wp_enqueue_scripts','menu_function');

?>

Many thanks, P