Sorry if this is a dumb question, I'm new at this... I want to remove one line from the main.js file without editing the theme file (to keep it updateable).
How can I remove this line? with a custom javascript plugin maybe?
$('#footer-menu ul li').not(':last').append('/');
You cannot edit a javascript file without editing a javascript file.
If you are altering another theme, the best way to do this is to create a child theme. That way you can inherit the base styles of the theme that you want, but you won't risk overwriting your modifications when you update WP.
You could remove the slash:
var elements $('#footer-menu ul li').not(':last');
elements.each(function(){
var text = $(this).text();
$(this).text(text.slice(0,-1));
});
The best thing to do, however, is to see if your theme is using the wp_enqueue_script function. If it is, you can wp_deregister_script the javascript file in your function.php file and add your own version of the file.
