Marquees not showing in newest wordpress version

I think I’m beginning to understand.

Do you see what’s the name/handle for the marquee script? (out of the code in the beginning of this discussion)

You can give that script any name/handle that you want when it comes to enqueueing it. Something like:

function my_marquee() {
	wp_register_script( 'my-marquee-script , get_template_directory_uri() . 'marquee.js', array('jquery'),
    '1.3.2', true );
     wp_enqueue_script('my-marquee-script');
}
endif;
add_action('template_redirect', 'my_marquee);

should work – assuming that the script is located in the root folder of your current theme.

I’m taking a step back. The javascript worked perfectly before I updated wordpress (from a recent version to the most recent version).

May it possible that the older version of wordpress didn’t need a enqueue of the script? Because before I hadn’t either, but that the javascript worked well..

No – WordPress has used script enqueueing for the past 7 full versions as far as I can recall. Are you sure that your script works with the current bundled version of jQuery (1.8.3 )?

I guess that’s the problem. I used this one: https://webcodingeasy.com/JS-classes/Javascript-marquee

But you know what’s the weird thing. Yesterday the marquees were showing up once, but when I refreshed they were gone again. One big mystery.