Adding JS to WordPress can be done in two ways. The first way is to enqueue the JS file.
The second way can be done by adding inline JS via a hook in functions.php – this is most likely used to initialize a script that is enqueued or add Google Tracking codes, Facebook pixels etc.
function my_code_snippet() { ?> <script> alert('it works'); </script> <?php } add_action('wp_footer', 'my_code_snippet', 100);
Note, the 100 is the priority of where the snippet should go. So, if you want to add a script to the bottom of the page underneath all of the enqueued JS files. Add a large
number to ensure it comes down the bottom.